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Date: Wed, 24 Apr 2024 14:49:21 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-26925: netfilter: nf_tables: release mutex after nft_gc_seq_end from abort path Description =========== In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: release mutex after nft_gc_seq_end from abort path The commit mutex should not be released during the critical section between nft_gc_seq_begin() and nft_gc_seq_end(), otherwise, async GC worker could collect expired objects and get the released commit lock within the same GC sequence. nf_tables_module_autoload() temporarily releases the mutex to load module dependencies, then it goes back to replay the transaction again. Move it at the end of the abort phase after nft_gc_seq_end() is called. The Linux kernel CVE team has assigned CVE-2024-26925 to this issue. Affected and fixed versions =========================== Issue introduced in 5.4.262 with commit 4b6346dc1edf and fixed in 5.4.274 with commit 61ac7284346c Issue introduced in 5.10.198 with commit 23292bdfda5f and fixed in 5.10.215 with commit 2cee2ff7f8cc Issue introduced in 5.15.134 with commit b44a459c6561 and fixed in 5.15.155 with commit eb769ff4e281 Issue introduced in 6.1.56 with commit 5d319f7a8143 and fixed in 6.1.86 with commit 8d3a58af50e4 Issue introduced in 6.5 with commit 720344340fb9 and fixed in 6.6.26 with commit 8038ee3c3e5b Issue introduced in 6.5 with commit 720344340fb9 and fixed in 6.8.5 with commit a34ba4bdeec0 Issue introduced in 6.5 with commit 720344340fb9 and fixed in 6.9-rc3 with commit 0d459e2ffb54 Issue introduced in 6.4.13 with commit e07e68823116 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-2024-26925 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: net/netfilter/nf_tables_api.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/61ac7284346c32f9a8c8ceac56102f7914060428 https://git.kernel.org/stable/c/2cee2ff7f8cce12a63a0a23ffe27f08d99541494 https://git.kernel.org/stable/c/eb769ff4e281f751adcaf4f4445cbf30817be139 https://git.kernel.org/stable/c/8d3a58af50e46167b6f1db47adadad03c0045dae https://git.kernel.org/stable/c/8038ee3c3e5b59bcd78467686db5270c68544e30 https://git.kernel.org/stable/c/a34ba4bdeec0c3b629160497594908dc820110f1 https://git.kernel.org/stable/c/0d459e2ffb541841714839e8228b845458ed3b27
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