CVE-2026-68476: ipvs: reload ip header after head reallocation
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026081505-CVE-2026-68476-47ba@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== In the Linux kernel, the following vulnerability has been resolved: ipvs: reload ip header after head reallocation __ip_vs_get_out_rt() calls skb_ensure_writable() which may reallocate skb->head. The Linux kernel CVE team has assigned CVE-2026-68476 to this issue. Affected and fixed versions =========================== Issue introduced in 4.10 with commit 8d8e20e2d7bba8c50e64e0eca1cb83956f468e49 and fixed in 6.6.145 with commit ac6ac3d35bfc0ade9d17d354c84e503a946ebdab Issue introduced in 4.10 with commit 8d8e20e2d7bba8c50e64e0eca1cb83956f468e49 and fixed in 6.12.97 with commit e51687fc56c2e39ea6e9532925f1aabd4d529f61 Issue introduced in 4.10 with commit 8d8e20e2d7bba8c50e64e0eca1cb83956f468e49 and fixed in 6.18.40 with commit 3fb7edd2018bb1ad0a68157383d9b9dac33dd645 Issue introduced in 4.10 with commit 8d8e20e2d7bba8c50e64e0eca1cb83956f468e49 and fixed in 7.1.5 with commit ad1e14710b360bda087ebf9fb82460eb5ef775de Issue introduced in 4.10 with commit 8d8e20e2d7bba8c50e64e0eca1cb83956f468e49 and fixed in 7.2-rc4 with commit a2f57827bf7c695b8c72dc4511cae8e86582369d 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-2026-68476 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/ipvs/ip_vs_xmit.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/ac6ac3d35bfc0ade9d17d354c84e503a946ebdab https://git.kernel.org/stable/c/e51687fc56c2e39ea6e9532925f1aabd4d529f61 https://git.kernel.org/stable/c/3fb7edd2018bb1ad0a68157383d9b9dac33dd645 https://git.kernel.org/stable/c/ad1e14710b360bda087ebf9fb82460eb5ef775de https://git.kernel.org/stable/c/a2f57827bf7c695b8c72dc4511cae8e86582369d