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.
Fix
Patch, vendor advisory and mitigation references on NVD 8
- https://git.kernel.org/stable/c/1244f0b2c3cecd3f349a877006e67c9492b41807 Patch
- https://git.kernel.org/stable/c/2c54bd5a380ebf646fb9efbc4ae782ff3a83a5af Patch
- https://git.kernel.org/stable/c/425efc6b3292a3c79bfee4a1661cf043dcd9cf2f Patch
- https://git.kernel.org/stable/c/64a723b0281ecaa59d31aad73ef8e408a84cb603 Patch
- https://git.kernel.org/stable/c/7a75a956692aa64211a9e95781af1ec461642de4 Patch
- https://git.kernel.org/stable/c/b1d0323a09a29f81572c7391e0d80d78724729c9 Patch
- https://git.kernel.org/stable/c/bf78a2706ce975981eb5167f2d3b609eb5d24c19 Patch
- https://git.kernel.org/stable/c/e7e943ddd1c6731812357a28e7954ade3a7d8517 Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.5 · linux, debianNVD modified 2026-10-15 22:18
Affected (CPE criteria) 2
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
References 11
- https://git.kernel.org/stable/c/1244f0b2c3cecd3f349a877006e67c9492b41807 Patch
- https://git.kernel.org/stable/c/2c54bd5a380ebf646fb9efbc4ae782ff3a83a5af Patch
- https://git.kernel.org/stable/c/425efc6b3292a3c79bfee4a1661cf043dcd9cf2f Patch
- https://git.kernel.org/stable/c/64a723b0281ecaa59d31aad73ef8e408a84cb603 Patch
- https://git.kernel.org/stable/c/7a75a956692aa64211a9e95781af1ec461642de4 Patch
- https://git.kernel.org/stable/c/b1d0323a09a29f81572c7391e0d80d78724729c9 Patch
- https://git.kernel.org/stable/c/bf78a2706ce975981eb5167f2d3b609eb5d24c19 Patch
- https://git.kernel.org/stable/c/e7e943ddd1c6731812357a28e7954ade3a7d8517 Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html