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.

INFO

Published Date :

2025-11-12T21:56:24.882Z

Last Modified :

2025-12-01T06:19:35.872Z

Source :

Linux
AFFECTED PRODUCTS

The following products are affected by CVE-2025-40179 vulnerability.

Vendors Products
Linux
  • Linux Kernel
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-40179.

URL Resource
https://git.kernel.org/stable/c/0a6ce20c156442a4ce2a404747bb0fb05d54eeb3 cve-icon cve-icon
https://git.kernel.org/stable/c/2b9da798ff0f4d026c5f0f815047393ebe7d8859 cve-icon cve-icon
https://git.kernel.org/stable/c/304fc34ff6fc8261138fd81f119e024ac3a129e9 cve-icon cve-icon
https://git.kernel.org/stable/c/566a1d6084563bd07433025aa23bcea4427de107 cve-icon cve-icon
https://git.kernel.org/stable/c/95a21611b14ae0a401720645245a8db16f040995 cve-icon cve-icon
https://git.kernel.org/stable/c/a2d803fab8a6c6a874277cb80156dc114db91921 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025111243-CVE-2025-40179-6d22@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-40179 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-40179 cve-icon
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