CVE-2025-38382

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix iteration of extrefs during log replay At __inode_add_ref() when processing extrefs, if we jump into the next label we have an undefined value of victim_name.len, since we haven't initialized it before we did the goto. This results in an invalid memory access in the next iteration of the loop since victim_name.len was not initialized to the length of the name of the current extref. Fix this by initializing victim_name.len with the current extref's name length.

Impact & exploitability

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/2d11d274e2e1d7c79e2ca8461ce3ff3a95c11171 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/2d11d274e2e1d7c79e2ca8461ce3ff3a95c11171Patch
• https://git.kernel.org/stable/c/539969fc472886a1d63565459514d47e27fef461Patch
• https://git.kernel.org/stable/c/54a7081ed168b72a8a2d6ef4ba3a1259705a2926Patch
• https://git.kernel.org/stable/c/7ac790dc2ba00499a8d671d4a24de4d4ad27e234Patch
• https://git.kernel.org/stable/c/aee57a0293dca675637e5504709f9f8fd8e871bePatch
• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlAdvisory