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Date: Wed, 1 May 2024 07:31:17 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-27016: netfilter: flowtable: validate pppoe header Description =========== In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: validate pppoe header Ensure there is sufficient room to access the protocol field of the PPPoe header. Validate it once before the flowtable lookup, then use a helper function to access protocol field. The Linux kernel CVE team has assigned CVE-2024-27016 to this issue. Affected and fixed versions =========================== Issue introduced in 5.13 with commit 72efd585f714 and fixed in 5.15.157 with commit d06977b9a410 Issue introduced in 5.13 with commit 72efd585f714 and fixed in 6.1.88 with commit 8bf7c76a2a20 Issue introduced in 5.13 with commit 72efd585f714 and fixed in 6.6.29 with commit a2471d271042 Issue introduced in 5.13 with commit 72efd585f714 and fixed in 6.8.8 with commit cf366ee3bc1b Issue introduced in 5.13 with commit 72efd585f714 and fixed in 6.9-rc5 with commit 87b3593bed18 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-2024-27016 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: include/net/netfilter/nf_flow_table.h net/netfilter/nf_flow_table_inet.c net/netfilter/nf_flow_table_ip.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/d06977b9a4109f8738bb276125eb6a0b772bc433 https://git.kernel.org/stable/c/8bf7c76a2a207ca2b4cfda0a279192adf27678d7 https://git.kernel.org/stable/c/a2471d271042ea18e8a6babc132a8716bb2f08b9 https://git.kernel.org/stable/c/cf366ee3bc1b7d1c76a882640ba3b3f8f1039163 https://git.kernel.org/stable/c/87b3593bed1868b2d9fe096c01bcdf0ea86cbebf
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