CVE-2025-40179

Nov. 14, 2025, 4:42 p.m.

None
No Score

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: verify orphan file size is not too big In principle orphan file can be arbitrarily large. However orphan replay needs to traverse it all and we also pin all its buffers in memory. Thus filesystems with absurdly large orphan files can lead to big amounts of memory consumed. Limit orphan file size to a sane value and also use kvmalloc() for allocating array of block descriptor structures to avoid large order allocations for sane but large orphan files.

Product(s) Impacted

Product Versions
linux_kernel
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

References

https://git.kernel.org/stable/c/0a6ce20c156442a4ce2a404747bb0fb05d54eeb3
https://git.kernel.org/stable/c/2b9da798ff0f4d026c5f0f815047393ebe7d8859
https://git.kernel.org/stable/c/304fc34ff6fc8261138fd81f119e024ac3a129e9
https://git.kernel.org/stable/c/566a1d6084563bd07433025aa23bcea4427de107
https://git.kernel.org/stable/c/95a21611b14ae0a401720645245a8db16f040995
https://git.kernel.org/stable/c/a2d803fab8a6c6a874277cb80156dc114db91921

Tags

416baaa9-dc9f-4396-8d5f-8c081fb06d67
2025-11-12
CVE-2025-40179

Timeline

Published: Nov. 12, 2025, 10:15 p.m.
Last Modified: Nov. 14, 2025, 4:42 p.m.

Status : Awaiting Analysis

CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.