Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request If the request being processed is not a v4 compound request, then examining the cstate can have undefined results. This patch adds a check that the rpc procedure being executed (rq_procinfo) is the NFSPROC4_COMPOUND procedure.
Product status
ed94164398c935a42be7b129a478eb19c598b68a (git) before bf78a2706ce975981eb5167f2d3b609eb5d24c19
ed94164398c935a42be7b129a478eb19c598b68a (git) before b1d0323a09a29f81572c7391e0d80d78724729c9
ed94164398c935a42be7b129a478eb19c598b68a (git) before 425efc6b3292a3c79bfee4a1661cf043dcd9cf2f
ed94164398c935a42be7b129a478eb19c598b68a (git) before 64a723b0281ecaa59d31aad73ef8e408a84cb603
ed94164398c935a42be7b129a478eb19c598b68a (git) before e7e943ddd1c6731812357a28e7954ade3a7d8517
ed94164398c935a42be7b129a478eb19c598b68a (git) before 7a75a956692aa64211a9e95781af1ec461642de4
ed94164398c935a42be7b129a478eb19c598b68a (git) before 2c54bd5a380ebf646fb9efbc4ae782ff3a83a5af
ed94164398c935a42be7b129a478eb19c598b68a (git) before 1244f0b2c3cecd3f349a877006e67c9492b41807
4.8
Any version before 4.8
5.4.295 (semver)
5.10.239 (semver)
5.15.186 (semver)
6.1.142 (semver)
6.6.95 (semver)
6.12.35 (semver)
6.15.4 (semver)
6.16 (original_commit_for_fix)
References
lists.debian.org/debian-lts-announce/2025/10/msg00008.html
lists.debian.org/debian-lts-announce/2025/10/msg00007.html
cert-portal.siemens.com/productcert/html/ssa-082556.html
git.kernel.org/...c/bf78a2706ce975981eb5167f2d3b609eb5d24c19
git.kernel.org/...c/b1d0323a09a29f81572c7391e0d80d78724729c9
git.kernel.org/...c/425efc6b3292a3c79bfee4a1661cf043dcd9cf2f
git.kernel.org/...c/64a723b0281ecaa59d31aad73ef8e408a84cb603
git.kernel.org/...c/e7e943ddd1c6731812357a28e7954ade3a7d8517
git.kernel.org/...c/7a75a956692aa64211a9e95781af1ec461642de4
git.kernel.org/...c/2c54bd5a380ebf646fb9efbc4ae782ff3a83a5af
git.kernel.org/...c/1244f0b2c3cecd3f349a877006e67c9492b41807