Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-64297
Published: July 27, 2026
Vulnerability identifier: #VU139692
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-64297
CWE-ID: CWE-703
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 exception handling in module decompression in kernel/module/decompress.c when processing a module for loading. A local user can trigger an allocation failure condition to cause a denial of service.
The issue can lead to a kernel oops due to a dereference of ZERO_SIZE_PTR after a failed allocation.
Affected software
Linux kernel
How to mitigate CVE-2026-64297
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/168072baf9ad516d5a06046514c7fea4c0671990
- https://git.kernel.org/stable/c/786d2d84416a9a1c1a47b71a68d679d886284be2
- https://git.kernel.org/stable/c/a82e170637e050a803b4f37542371ef216bf66d2
- https://git.kernel.org/stable/c/afcc0515bbdd28d509a2b5870faaa89b137f5d53
- https://git.kernel.org/stable/c/e7da02659c229f73492fb1ed87ceda4090153aaa
- https://git.kernel.org/stable/c/e7f174715f9f0cbcb9e87b52e4fc4ef149baac98