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Message-ID: <2024122732-CVE-2024-53217-4f05@gregkh> Date: Fri, 27 Dec 2024 14:53:03 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-53217: NFSD: Prevent NULL dereference in nfsd4_process_cb_update() Description =========== In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent NULL dereference in nfsd4_process_cb_update() @ses is initialized to NULL. If __nfsd4_find_backchannel() finds no available backchannel session, setup_callback_client() will try to dereference @ses and segfault. The Linux kernel CVE team has assigned CVE-2024-53217 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.38 with commit dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 and fixed in 4.19.325 with commit d9a0d1f6e15859ea7a86a327f28491e23deaaa62 Issue introduced in 2.6.38 with commit dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 and fixed in 5.4.287 with commit cac1405e3ff6685a438e910ad719e0cf06af90ee Issue introduced in 2.6.38 with commit dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 and fixed in 5.10.231 with commit 752a75811f27300fe8131b0a1efc91960f6f88e7 Issue introduced in 2.6.38 with commit dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 and fixed in 5.15.174 with commit c5d90f9302742985a5078e42ac38de42c364c44a Issue introduced in 2.6.38 with commit dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 and fixed in 6.1.120 with commit 0c3b0e326f838787d229314d4de83af9c53347e8 Issue introduced in 2.6.38 with commit dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 and fixed in 6.6.64 with commit eb51733ae5fc73d95bd857d5da26f9f65b202a79 Issue introduced in 2.6.38 with commit dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 and fixed in 6.11.11 with commit 03178cd8f67227015debb700123987fe96275cd1 Issue introduced in 2.6.38 with commit dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 and fixed in 6.12.2 with commit 4a4ffc1aa9d618e41ad9151f40966e402e58a5a2 Issue introduced in 2.6.38 with commit dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 and fixed in 6.13-rc1 with commit 1e02c641c3a43c88cecc08402000418e15578d38 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2024-53217 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: fs/nfsd/nfs4callback.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/d9a0d1f6e15859ea7a86a327f28491e23deaaa62 https://git.kernel.org/stable/c/cac1405e3ff6685a438e910ad719e0cf06af90ee https://git.kernel.org/stable/c/752a75811f27300fe8131b0a1efc91960f6f88e7 https://git.kernel.org/stable/c/c5d90f9302742985a5078e42ac38de42c364c44a https://git.kernel.org/stable/c/0c3b0e326f838787d229314d4de83af9c53347e8 https://git.kernel.org/stable/c/eb51733ae5fc73d95bd857d5da26f9f65b202a79 https://git.kernel.org/stable/c/03178cd8f67227015debb700123987fe96275cd1 https://git.kernel.org/stable/c/4a4ffc1aa9d618e41ad9151f40966e402e58a5a2 https://git.kernel.org/stable/c/1e02c641c3a43c88cecc08402000418e15578d38
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