Memory leak in Linux kernel - CVE-2026-45986
Published: May 28, 2026
Vulnerability identifier: #VU132511
CSH Severity: Low
CVSS v4.0: 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-2026-45986
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a memory leak in cc_mac_digest() when handling a hash request finalization failure. A local user can trigger a failure condition to cause a denial of service.
How to mitigate CVE-2026-45986
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/02c64052fad03699b9c6d1df2f9b444d17e4ac50
- https://git.kernel.org/stable/c/22f1dd4ca3bfe77db52cc7df3cc353dc114aab8b
- https://git.kernel.org/stable/c/3061c9bfb3f5b3522ab174e2fa7473b24422d1c6
- https://git.kernel.org/stable/c/502440c235fe34cee02b24d7f893841f7565b3bc
- https://git.kernel.org/stable/c/910f335786a0a0f0b46c3c8c19a13d25cb4454b6