In the Linux kernel, the following vulnerability has been resolved: btrfs: abort transaction on unexpected eb generation at btrfs_copy_root() If we find an unexpected generation for the extent buffer we are cloning at btrfs_copy_root(), we just WARN_ON() and don't error out and abort the transaction, meaning we allow to persist metadata with an unexpected generation. Instead of warning only, abort the transaction and return -EUCLEAN.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8 Patch
- https://git.kernel.org/stable/c/4290e34fb87ae556b12c216efd0ae91583446b7a Patch
- https://git.kernel.org/stable/c/4734255ef39b416864139dcda96a387fe5f33a6a Patch
- https://git.kernel.org/stable/c/da2124719f386b6e5d4d4b1a2e67c440e4d5892f Patch
- https://git.kernel.org/stable/c/f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3 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 2026-10-19 21:10
Affected (CPE criteria) 2
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
References 7
- https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8 Patch
- https://git.kernel.org/stable/c/4290e34fb87ae556b12c216efd0ae91583446b7a Patch
- https://git.kernel.org/stable/c/4734255ef39b416864139dcda96a387fe5f33a6a Patch
- https://git.kernel.org/stable/c/da2124719f386b6e5d4d4b1a2e67c440e4d5892f Patch
- https://git.kernel.org/stable/c/f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3 Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html