{ "summary": { "snap": { "added": [], "removed": [], "diff": [] }, "deb": { "added": [ "linux-image-6.17.0-23-generic", "linux-modules-6.17.0-23-generic" ], "removed": [ "linux-image-6.17.0-22-generic", "linux-modules-6.17.0-22-generic" ], "diff": [ "kmod", "libkmod2", "linux-image-virtual", "openssh-client", "openssh-server", "openssh-sftp-server" ] } }, "diff": { "deb": [ { "name": "kmod", "from_version": { "source_package_name": "kmod", "source_package_version": "34.2-2ubuntu1", "version": "34.2-2ubuntu1" }, "to_version": { "source_package_name": "kmod", "source_package_version": "34.2-2ubuntu1.1", "version": "34.2-2ubuntu1.1" }, "cves": [ { "cve": "CVE-2026-31431", "url": "https://ubuntu.com/security/CVE-2026-31431", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.", "cve_priority": "high", "cve_public_date": "2026-04-23" } ], "launchpad_bugs_fixed": [ 2150743 ], "changes": [ { "cves": [ { "cve": "CVE-2026-31431", "url": "https://ubuntu.com/security/CVE-2026-31431", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.", "cve_priority": "high", "cve_public_date": "2026-04-23" } ], "log": [ "", " * Disable loading of algif_aead module to mitigate CVE-2026-31431", " (LP: #2150743)", " - debian/modprobe.d/disable-algif_aead.conf", "" ], "package": "kmod", "version": "34.2-2ubuntu1.1", "urgency": "medium", "distributions": "questing-security", "launchpad_bugs_fixed": [ 2150743 ], "author": "Marc Deslauriers ", "date": "Thu, 30 Apr 2026 08:31:34 -0400" } ], "notes": null, "is_version_downgrade": false }, { "name": "libkmod2", "from_version": { "source_package_name": "kmod", "source_package_version": "34.2-2ubuntu1", "version": "34.2-2ubuntu1" }, "to_version": { "source_package_name": "kmod", "source_package_version": "34.2-2ubuntu1.1", "version": "34.2-2ubuntu1.1" }, "cves": [ { "cve": "CVE-2026-31431", "url": "https://ubuntu.com/security/CVE-2026-31431", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.", "cve_priority": "high", "cve_public_date": "2026-04-23" } ], "launchpad_bugs_fixed": [ 2150743 ], "changes": [ { "cves": [ { "cve": "CVE-2026-31431", "url": "https://ubuntu.com/security/CVE-2026-31431", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.", "cve_priority": "high", "cve_public_date": "2026-04-23" } ], "log": [ "", " * Disable loading of algif_aead module to mitigate CVE-2026-31431", " (LP: #2150743)", " - debian/modprobe.d/disable-algif_aead.conf", "" ], "package": "kmod", "version": "34.2-2ubuntu1.1", "urgency": "medium", "distributions": "questing-security", "launchpad_bugs_fixed": [ 2150743 ], "author": "Marc Deslauriers ", "date": "Thu, 30 Apr 2026 08:31:34 -0400" } ], "notes": null, "is_version_downgrade": false }, { "name": "linux-image-virtual", "from_version": { "source_package_name": "linux-meta", "source_package_version": "6.17.0-22.22", "version": "6.17.0-22.22" }, "to_version": { "source_package_name": "linux-meta", "source_package_version": "6.17.0-23.23", "version": "6.17.0-23.23" }, "cves": [], "launchpad_bugs_fixed": [], "changes": [ { "cves": [], "log": [ "", " * Main version: 6.17.0-23.23", "" ], "package": "linux-meta", "version": "6.17.0-23.23", "urgency": "medium", "distributions": "questing", "launchpad_bugs_fixed": [], "author": "Manuel Diewald ", "date": "Sat, 11 Apr 2026 23:38:36 +0200" } ], "notes": null, "is_version_downgrade": false }, { "name": "openssh-client", "from_version": { "source_package_name": "openssh", "source_package_version": "1:10.0p1-5ubuntu5.1", "version": "1:10.0p1-5ubuntu5.1" }, "to_version": { "source_package_name": "openssh", "source_package_version": "1:10.0p1-5ubuntu5.4", "version": "1:10.0p1-5ubuntu5.4" }, "cves": [ { "cve": "CVE-2026-35385", "url": "https://ubuntu.com/security/CVE-2026-35385", "cve_description": "In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35386", "url": "https://ubuntu.com/security/CVE-2026-35386", "cve_description": "In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35387", "url": "https://ubuntu.com/security/CVE-2026-35387", "cve_description": "OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35388", "url": "https://ubuntu.com/security/CVE-2026-35388", "cve_description": "OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35414", "url": "https://ubuntu.com/security/CVE-2026-35414", "cve_description": "OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.", "cve_priority": "medium", "cve_public_date": "2026-04-02 18:16:00 UTC" } ], "launchpad_bugs_fixed": [ 2147451 ], "changes": [ { "cves": [ { "cve": "CVE-2026-35385", "url": "https://ubuntu.com/security/CVE-2026-35385", "cve_description": "In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35386", "url": "https://ubuntu.com/security/CVE-2026-35386", "cve_description": "In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35387", "url": "https://ubuntu.com/security/CVE-2026-35387", "cve_description": "OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35388", "url": "https://ubuntu.com/security/CVE-2026-35388", "cve_description": "OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35414", "url": "https://ubuntu.com/security/CVE-2026-35414", "cve_description": "OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.", "cve_priority": "medium", "cve_public_date": "2026-04-02 18:16:00 UTC" } ], "log": [ "", " * SECURITY UPDATE: unexpected scp setuid and setgid", " - debian/patches/CVE-2026-35385.patch: clear setuid/setgid bits from", " downloaded files in scp.c.", " - CVE-2026-35385", " * SECURITY UPDATE: command execution via shell metacharacters in username", " - debian/patches/CVE-2026-35386-pre1.patch: apply validity rules on", " ProxyJump usernames and hostnames in readconf.c, readconf.h, ssh.c.", " - debian/patches/CVE-2026-35386.patch: move username check earlier in", " ssh.c.", " - debian/patches/CVE-2026-35386-2.patch: adapt to username validity", " check change in regress/percent.sh.", " - CVE-2026-35386", " * SECURITY UPDATE: use of unintended ECDSA algorithms", " - debian/patches/CVE-2026-35387_35414.patch: correctly match ECDSA", " signature algorithms against algorithm allowlists in", " auth2-hostbased.c, auth2-pubkey.c, sshconnect2.c.", " - CVE-2026-35387", " * SECURITY UPDATE: missing connection multiplexing confirmation", " - debian/patches/CVE-2026-35388.patch: add missing askpass check in", " mux.c.", " - CVE-2026-35388", " * SECURITY UPDATE: authorized_keys principals option mishandling", " - debian/patches/CVE-2026-35387_35414.patch: check for commas in", " auth2-pubkeyfile.c.", " - CVE-2026-35414", "" ], "package": "openssh", "version": "1:10.0p1-5ubuntu5.4", "urgency": "medium", "distributions": "questing-security", "launchpad_bugs_fixed": [], "author": "Marc Deslauriers ", "date": "Mon, 27 Apr 2026 20:24:02 -0400" }, { "cves": [], "log": [ "", " * repair test after changes to percent expansion of usernames", " (LP: #2147451)", "" ], "package": "openssh", "version": "1:10.0p1-5ubuntu5.2", "urgency": "medium", "distributions": "questing", "launchpad_bugs_fixed": [ 2147451 ], "author": "Nick Rosbrook ", "date": "Tue, 07 Apr 2026 10:00:59 -0400" } ], "notes": null, "is_version_downgrade": false }, { "name": "openssh-server", "from_version": { "source_package_name": "openssh", "source_package_version": "1:10.0p1-5ubuntu5.1", "version": "1:10.0p1-5ubuntu5.1" }, "to_version": { "source_package_name": "openssh", "source_package_version": "1:10.0p1-5ubuntu5.4", "version": "1:10.0p1-5ubuntu5.4" }, "cves": [ { "cve": "CVE-2026-35385", "url": "https://ubuntu.com/security/CVE-2026-35385", "cve_description": "In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35386", "url": "https://ubuntu.com/security/CVE-2026-35386", "cve_description": "In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35387", "url": "https://ubuntu.com/security/CVE-2026-35387", "cve_description": "OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35388", "url": "https://ubuntu.com/security/CVE-2026-35388", "cve_description": "OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35414", "url": "https://ubuntu.com/security/CVE-2026-35414", "cve_description": "OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.", "cve_priority": "medium", "cve_public_date": "2026-04-02 18:16:00 UTC" } ], "launchpad_bugs_fixed": [ 2147451 ], "changes": [ { "cves": [ { "cve": "CVE-2026-35385", "url": "https://ubuntu.com/security/CVE-2026-35385", "cve_description": "In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35386", "url": "https://ubuntu.com/security/CVE-2026-35386", "cve_description": "In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35387", "url": "https://ubuntu.com/security/CVE-2026-35387", "cve_description": "OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35388", "url": "https://ubuntu.com/security/CVE-2026-35388", "cve_description": "OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35414", "url": "https://ubuntu.com/security/CVE-2026-35414", "cve_description": "OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.", "cve_priority": "medium", "cve_public_date": "2026-04-02 18:16:00 UTC" } ], "log": [ "", " * SECURITY UPDATE: unexpected scp setuid and setgid", " - debian/patches/CVE-2026-35385.patch: clear setuid/setgid bits from", " downloaded files in scp.c.", " - CVE-2026-35385", " * SECURITY UPDATE: command execution via shell metacharacters in username", " - debian/patches/CVE-2026-35386-pre1.patch: apply validity rules on", " ProxyJump usernames and hostnames in readconf.c, readconf.h, ssh.c.", " - debian/patches/CVE-2026-35386.patch: move username check earlier in", " ssh.c.", " - debian/patches/CVE-2026-35386-2.patch: adapt to username validity", " check change in regress/percent.sh.", " - CVE-2026-35386", " * SECURITY UPDATE: use of unintended ECDSA algorithms", " - debian/patches/CVE-2026-35387_35414.patch: correctly match ECDSA", " signature algorithms against algorithm allowlists in", " auth2-hostbased.c, auth2-pubkey.c, sshconnect2.c.", " - CVE-2026-35387", " * SECURITY UPDATE: missing connection multiplexing confirmation", " - debian/patches/CVE-2026-35388.patch: add missing askpass check in", " mux.c.", " - CVE-2026-35388", " * SECURITY UPDATE: authorized_keys principals option mishandling", " - debian/patches/CVE-2026-35387_35414.patch: check for commas in", " auth2-pubkeyfile.c.", " - CVE-2026-35414", "" ], "package": "openssh", "version": "1:10.0p1-5ubuntu5.4", "urgency": "medium", "distributions": "questing-security", "launchpad_bugs_fixed": [], "author": "Marc Deslauriers ", "date": "Mon, 27 Apr 2026 20:24:02 -0400" }, { "cves": [], "log": [ "", " * repair test after changes to percent expansion of usernames", " (LP: #2147451)", "" ], "package": "openssh", "version": "1:10.0p1-5ubuntu5.2", "urgency": "medium", "distributions": "questing", "launchpad_bugs_fixed": [ 2147451 ], "author": "Nick Rosbrook ", "date": "Tue, 07 Apr 2026 10:00:59 -0400" } ], "notes": null, "is_version_downgrade": false }, { "name": "openssh-sftp-server", "from_version": { "source_package_name": "openssh", "source_package_version": "1:10.0p1-5ubuntu5.1", "version": "1:10.0p1-5ubuntu5.1" }, "to_version": { "source_package_name": "openssh", "source_package_version": "1:10.0p1-5ubuntu5.4", "version": "1:10.0p1-5ubuntu5.4" }, "cves": [ { "cve": "CVE-2026-35385", "url": "https://ubuntu.com/security/CVE-2026-35385", "cve_description": "In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35386", "url": "https://ubuntu.com/security/CVE-2026-35386", "cve_description": "In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35387", "url": "https://ubuntu.com/security/CVE-2026-35387", "cve_description": "OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35388", "url": "https://ubuntu.com/security/CVE-2026-35388", "cve_description": "OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35414", "url": "https://ubuntu.com/security/CVE-2026-35414", "cve_description": "OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.", "cve_priority": "medium", "cve_public_date": "2026-04-02 18:16:00 UTC" } ], "launchpad_bugs_fixed": [ 2147451 ], "changes": [ { "cves": [ { "cve": "CVE-2026-35385", "url": "https://ubuntu.com/security/CVE-2026-35385", "cve_description": "In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35386", "url": "https://ubuntu.com/security/CVE-2026-35386", "cve_description": "In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35387", "url": "https://ubuntu.com/security/CVE-2026-35387", "cve_description": "OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35388", "url": "https://ubuntu.com/security/CVE-2026-35388", "cve_description": "OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.", "cve_priority": "medium", "cve_public_date": "2026-04-02 17:16:00 UTC" }, { "cve": "CVE-2026-35414", "url": "https://ubuntu.com/security/CVE-2026-35414", "cve_description": "OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.", "cve_priority": "medium", "cve_public_date": "2026-04-02 18:16:00 UTC" } ], "log": [ "", " * SECURITY UPDATE: unexpected scp setuid and setgid", " - debian/patches/CVE-2026-35385.patch: clear setuid/setgid bits from", " downloaded files in scp.c.", " - CVE-2026-35385", " * SECURITY UPDATE: command execution via shell metacharacters in username", " - debian/patches/CVE-2026-35386-pre1.patch: apply validity rules on", " ProxyJump usernames and hostnames in readconf.c, readconf.h, ssh.c.", " - debian/patches/CVE-2026-35386.patch: move username check earlier in", " ssh.c.", " - debian/patches/CVE-2026-35386-2.patch: adapt to username validity", " check change in regress/percent.sh.", " - CVE-2026-35386", " * SECURITY UPDATE: use of unintended ECDSA algorithms", " - debian/patches/CVE-2026-35387_35414.patch: correctly match ECDSA", " signature algorithms against algorithm allowlists in", " auth2-hostbased.c, auth2-pubkey.c, sshconnect2.c.", " - CVE-2026-35387", " * SECURITY UPDATE: missing connection multiplexing confirmation", " - debian/patches/CVE-2026-35388.patch: add missing askpass check in", " mux.c.", " - CVE-2026-35388", " * SECURITY UPDATE: authorized_keys principals option mishandling", " - debian/patches/CVE-2026-35387_35414.patch: check for commas in", " auth2-pubkeyfile.c.", " - CVE-2026-35414", "" ], "package": "openssh", "version": "1:10.0p1-5ubuntu5.4", "urgency": "medium", "distributions": "questing-security", "launchpad_bugs_fixed": [], "author": "Marc Deslauriers ", "date": "Mon, 27 Apr 2026 20:24:02 -0400" }, { "cves": [], "log": [ "", " * repair test after changes to percent expansion of usernames", " (LP: #2147451)", "" ], "package": "openssh", "version": "1:10.0p1-5ubuntu5.2", "urgency": "medium", "distributions": "questing", "launchpad_bugs_fixed": [ 2147451 ], "author": "Nick Rosbrook ", "date": "Tue, 07 Apr 2026 10:00:59 -0400" } ], "notes": null, "is_version_downgrade": false } ], "snap": [] }, "added": { "deb": [ { "name": "linux-image-6.17.0-23-generic", "from_version": { "source_package_name": "linux-signed", "source_package_version": "6.17.0-22.22", "version": null }, "to_version": { "source_package_name": "linux-signed", "source_package_version": "6.17.0-23.23", "version": "6.17.0-23.23" }, "cves": [], "launchpad_bugs_fixed": [ 1786013 ], "changes": [ { "cves": [], "log": [ "", " * Main version: 6.17.0-23.23", "", " * Packaging resync (LP: #1786013)", " - [Packaging] debian/tracking-bug -- resync from main package", "" ], "package": "linux-signed", "version": "6.17.0-23.23", "urgency": "medium", "distributions": "questing", "launchpad_bugs_fixed": [ 1786013 ], "author": "Manuel Diewald ", "date": "Sat, 11 Apr 2026 23:38:45 +0200" } ], "notes": "linux-image-6.17.0-23-generic version '6.17.0-23.23' (source package linux-signed version '6.17.0-23.23') was added. linux-image-6.17.0-23-generic version '6.17.0-23.23' has the same source package name, linux-signed, as removed package linux-image-6.17.0-22-generic. As such we can use the source package version of the removed package, '6.17.0-22.22', as the starting point in our changelog diff. Kernel packages are an example of where the binary package name changes for the same source package. Using the removed package source package version as our starting point means we can still get meaningful changelog diffs even for what appears to be a new package.", "is_version_downgrade": false }, { "name": "linux-modules-6.17.0-23-generic", "from_version": { "source_package_name": "linux", "source_package_version": "6.17.0-22.22", "version": null }, "to_version": { "source_package_name": "linux", "source_package_version": "6.17.0-23.23", "version": "6.17.0-23.23" }, "cves": [ { "cve": "CVE-2026-23231", "url": "https://ubuntu.com/security/CVE-2026-23231", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix use-after-free in nf_tables_addchain() nf_tables_addchain() publishes the chain to table->chains via list_add_tail_rcu() (in nft_chain_add()) before registering hooks. If nf_tables_register_hook() then fails, the error path calls nft_chain_del() (list_del_rcu()) followed by nf_tables_chain_destroy() with no RCU grace period in between. This creates two use-after-free conditions: 1) Control-plane: nf_tables_dump_chains() traverses table->chains under rcu_read_lock(). A concurrent dump can still be walking the chain when the error path frees it. 2) Packet path: for NFPROTO_INET, nf_register_net_hook() briefly installs the IPv4 hook before IPv6 registration fails. Packets entering nft_do_chain() via the transient IPv4 hook can still be dereferencing chain->blob_gen_X when the error path frees the chain. Add synchronize_rcu() between nft_chain_del() and the chain destroy so that all RCU readers -- both dump threads and in-flight packet evaluation -- have finished before the chain is freed.", "cve_priority": "high", "cve_public_date": "2026-03-04 13:15:00 UTC" }, { "cve": "CVE-2026-23209", "url": "https://ubuntu.com/security/CVE-2026-23209", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: macvlan: fix error recovery in macvlan_common_newlink() valis provided a nice repro to crash the kernel: ip link add p1 type veth peer p2 ip link set address 00:00:00:00:00:20 dev p1 ip link set up dev p1 ip link set up dev p2 ip link add mv0 link p2 type macvlan mode source ip link add invalid% link p2 type macvlan mode source macaddr add 00:00:00:00:00:20 ping -c1 -I p1 1.2.3.4 He also gave a very detailed analysis: The issue is triggered when a new macvlan link is created with MACVLAN_MODE_SOURCE mode and MACVLAN_MACADDR_ADD (or MACVLAN_MACADDR_SET) parameter, lower device already has a macvlan port and register_netdevice() called from macvlan_common_newlink() fails (e.g. because of the invalid link name). In this case macvlan_hash_add_source is called from macvlan_change_sources() / macvlan_common_newlink(): This adds a reference to vlan to the port's vlan_source_hash using macvlan_source_entry. vlan is a pointer to the priv data of the link that is being created. When register_netdevice() fails, the error is returned from macvlan_newlink() to rtnl_newlink_create(): if (ops->newlink) err = ops->newlink(dev, ¶ms, extack); else err = register_netdevice(dev); if (err < 0) { free_netdev(dev); goto out; } and free_netdev() is called, causing a kvfree() on the struct net_device that is still referenced in the source entry attached to the lower device's macvlan port. Now all packets sent on the macvlan port with a matching source mac address will trigger a use-after-free in macvlan_forward_source(). With all that, my fix is to make sure we call macvlan_flush_sources() regardless of @create value whenever \"goto destroy_macvlan_port;\" path is taken. Many thanks to valis for following up on this issue.", "cve_priority": "medium", "cve_public_date": "2026-02-14 17:15:00 UTC" }, { "cve": "CVE-2026-23112", "url": "https://ubuntu.com/security/CVE-2026-23112", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU length or offset exceeds sg_cnt and then use bogus sg->length/offset values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining entries, and sg->length/offset before building the bvec.", "cve_priority": "high", "cve_public_date": "2026-02-13 14:16:00 UTC" } ], "launchpad_bugs_fixed": [ 2147920, 2144380, 2144522 ], "changes": [ { "cves": [ { "cve": "CVE-2026-23231", "url": "https://ubuntu.com/security/CVE-2026-23231", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix use-after-free in nf_tables_addchain() nf_tables_addchain() publishes the chain to table->chains via list_add_tail_rcu() (in nft_chain_add()) before registering hooks. If nf_tables_register_hook() then fails, the error path calls nft_chain_del() (list_del_rcu()) followed by nf_tables_chain_destroy() with no RCU grace period in between. This creates two use-after-free conditions: 1) Control-plane: nf_tables_dump_chains() traverses table->chains under rcu_read_lock(). A concurrent dump can still be walking the chain when the error path frees it. 2) Packet path: for NFPROTO_INET, nf_register_net_hook() briefly installs the IPv4 hook before IPv6 registration fails. Packets entering nft_do_chain() via the transient IPv4 hook can still be dereferencing chain->blob_gen_X when the error path frees the chain. Add synchronize_rcu() between nft_chain_del() and the chain destroy so that all RCU readers -- both dump threads and in-flight packet evaluation -- have finished before the chain is freed.", "cve_priority": "high", "cve_public_date": "2026-03-04 13:15:00 UTC" }, { "cve": "CVE-2026-23209", "url": "https://ubuntu.com/security/CVE-2026-23209", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: macvlan: fix error recovery in macvlan_common_newlink() valis provided a nice repro to crash the kernel: ip link add p1 type veth peer p2 ip link set address 00:00:00:00:00:20 dev p1 ip link set up dev p1 ip link set up dev p2 ip link add mv0 link p2 type macvlan mode source ip link add invalid% link p2 type macvlan mode source macaddr add 00:00:00:00:00:20 ping -c1 -I p1 1.2.3.4 He also gave a very detailed analysis: The issue is triggered when a new macvlan link is created with MACVLAN_MODE_SOURCE mode and MACVLAN_MACADDR_ADD (or MACVLAN_MACADDR_SET) parameter, lower device already has a macvlan port and register_netdevice() called from macvlan_common_newlink() fails (e.g. because of the invalid link name). In this case macvlan_hash_add_source is called from macvlan_change_sources() / macvlan_common_newlink(): This adds a reference to vlan to the port's vlan_source_hash using macvlan_source_entry. vlan is a pointer to the priv data of the link that is being created. When register_netdevice() fails, the error is returned from macvlan_newlink() to rtnl_newlink_create(): if (ops->newlink) err = ops->newlink(dev, ¶ms, extack); else err = register_netdevice(dev); if (err < 0) { free_netdev(dev); goto out; } and free_netdev() is called, causing a kvfree() on the struct net_device that is still referenced in the source entry attached to the lower device's macvlan port. Now all packets sent on the macvlan port with a matching source mac address will trigger a use-after-free in macvlan_forward_source(). With all that, my fix is to make sure we call macvlan_flush_sources() regardless of @create value whenever \"goto destroy_macvlan_port;\" path is taken. Many thanks to valis for following up on this issue.", "cve_priority": "medium", "cve_public_date": "2026-02-14 17:15:00 UTC" }, { "cve": "CVE-2026-23112", "url": "https://ubuntu.com/security/CVE-2026-23112", "cve_description": "In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU length or offset exceeds sg_cnt and then use bogus sg->length/offset values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining entries, and sg->length/offset before building the bvec.", "cve_priority": "high", "cve_public_date": "2026-02-13 14:16:00 UTC" } ], "log": [ "", " * questing/linux: 6.17.0-23.23 -proposed tracker (LP: #2147920)", "", " * CVE-2026-23231", " - netfilter: nf_tables: fix use-after-free in nf_tables_addchain()", "", " * macvlan: observe an RCU grace period in macvlan_common_newlink() error", " path (LP: #2144380) // CVE-2026-23209", " - macvlan: observe an RCU grace period in macvlan_common_newlink() error", " path", "", " * Dell Machines cannot boot into OS with 6.17.0-1012-oem (LP: #2144522)", " - drm/amd: Disable MES LR compute W/A", " - drm/amd: Set minimum version for set_hw_resource_1 on gfx11 to 0x52", "", " * CVE-2026-23112", " - nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec", "" ], "package": "linux", "version": "6.17.0-23.23", "urgency": "medium", "distributions": "questing", "launchpad_bugs_fixed": [ 2147920, 2144380, 2144522 ], "author": "Manuel Diewald ", "date": "Sat, 11 Apr 2026 22:54:06 +0200" } ], "notes": "linux-modules-6.17.0-23-generic version '6.17.0-23.23' (source package linux version '6.17.0-23.23') was added. linux-modules-6.17.0-23-generic version '6.17.0-23.23' has the same source package name, linux, as removed package linux-modules-6.17.0-22-generic. As such we can use the source package version of the removed package, '6.17.0-22.22', as the starting point in our changelog diff. Kernel packages are an example of where the binary package name changes for the same source package. Using the removed package source package version as our starting point means we can still get meaningful changelog diffs even for what appears to be a new package.", "is_version_downgrade": false } ], "snap": [] }, "removed": { "deb": [ { "name": "linux-image-6.17.0-22-generic", "from_version": { "source_package_name": "linux-signed", "source_package_version": "6.17.0-22.22", "version": "6.17.0-22.22" }, "to_version": { "source_package_name": null, "source_package_version": null, "version": null }, "cves": [], "launchpad_bugs_fixed": [], "changes": [], "notes": null, "is_version_downgrade": false }, { "name": "linux-modules-6.17.0-22-generic", "from_version": { "source_package_name": "linux", "source_package_version": "6.17.0-22.22", "version": "6.17.0-22.22" }, "to_version": { "source_package_name": null, "source_package_version": null, "version": null }, "cves": [], "launchpad_bugs_fixed": [], "changes": [], "notes": null, "is_version_downgrade": false } ], "snap": [] }, "notes": "Changelog diff for Ubuntu 25.10 questing image from daily image serial 20260429 to 20260503", "from_series": "questing", "to_series": "questing", "from_serial": "20260429", "to_serial": "20260503", "from_manifest_filename": "daily_manifest.previous", "to_manifest_filename": "manifest.current" }