CVE-2025-39800

high

Description

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.

References

https://git.kernel.org/stable/c/f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3

https://git.kernel.org/stable/c/da2124719f386b6e5d4d4b1a2e67c440e4d5892f

https://git.kernel.org/stable/c/4734255ef39b416864139dcda96a387fe5f33a6a

https://git.kernel.org/stable/c/4290e34fb87ae556b12c216efd0ae91583446b7a

https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8

Details

Source: Mitre, NVD

Published: 2025-09-15

Updated: 2025-09-15

Risk Information

CVSS v2

Base Score: 6.9

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00018