CVE-2025-39800
HIGH severity · CVSS 7.8
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8Patch
- https://git.kernel.org/stable/c/4290e34fb87ae556b12c216efd0ae91583446b7aPatch
- https://git.kernel.org/stable/c/4734255ef39b416864139dcda96a387fe5f33a6aPatch
- https://git.kernel.org/stable/c/da2124719f386b6e5d4d4b1a2e67c440e4d5892fPatch
- https://git.kernel.org/stable/c/f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlAdvisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html