Strix
26.1K

CVE-2025-40179

UnknownEPSS 0.18%

Last modified

CVE-2025-40179 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.18%

7.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 95a21611b14ae0a401720645245a8db16f040995; >= 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 566a1d6084563bd07433025aa23bcea4427de107; >= 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 304fc34ff6fc8261138fd81f119e024ac3a129e9; >= 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < a2d803fab8a6c6a874277cb80156dc114db91921; >= 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 2b9da798ff0f4d026c5f0f815047393ebe7d8859; >= 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 0a6ce20c156442a4ce2a404747bb0fb05d54eeb3
LinuxLinux5.15

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-40179?
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.
How severe is CVE-2025-40179?
Severity scoring for CVE-2025-40179 is pending analysis. The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2025-40179?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2025

View all 2025CVEs →

Are you affected by CVE-2025-40179?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST