Allocation of Resources Without Limits or Throttling in Linux kernel - CVE-2026-80892
Published: September 5, 2026
Vulnerability identifier: #VU147023
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80892
CWE-ID: CWE-770
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource allocation limits in the EROFS LZMA decompression stream pool when mounting an EROFS image. A local user can mount an EROFS image containing LZMA dictionaries to cause a denial of service.
Each LZMA stream can preallocate an image-supplied dictionary of up to 8 MiB.
Affected software
Linux kernel
How to mitigate CVE-2026-80892
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/0c676903cb2a61992ded8e7907609cc6b0f11744
- https://git.kernel.org/stable/c/5aaa06dfc10f8398c8807453dbec738ea9af10e4
- https://git.kernel.org/stable/c/682cb3ece37fc5141e73bc726ccf4adb833e5189
- https://git.kernel.org/stable/c/c9b47e6b23114e939b17f818471c7a46e59006e7
- https://git.kernel.org/stable/c/e52da169b8c0d19bb2d803f2a07fe0e5a00462d6
- https://git.kernel.org/stable/c/e8b3d09aa8889dda9be9cbb3d2f0218c4b9acde4