#VU118479 Out-of-bounds read in Linux kernel - CVE-2025-40205
Published: November 13, 2025
Vulnerability identifier: #VU118479
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-40205
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the btrfs_encode_fh() function in fs/btrfs/export.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0276c8582488022f057b4cec21975a5edf079f47
- https://git.kernel.org/stable/c/361d67276eb8ec6be8f27f4ad6c6090459438fee
- https://git.kernel.org/stable/c/43143776b0a7604d873d1a6f3e552a00aa930224
- https://git.kernel.org/stable/c/60de2f55d2aca53e81b4ef2a67d7cc9e1eb677db
- https://git.kernel.org/stable/c/742b44342204e5dfe3926433823623c1a0c581df
- https://git.kernel.org/stable/c/d3a9a8e1275eb9b87f006b5562a287aea3f6885f
- https://git.kernel.org/stable/c/d91f6626133698362bba08fbc04bd72c466806d3
- https://git.kernel.org/stable/c/dff4f9ff5d7f289e4545cc936362e01ed3252742