Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-45876
Published: May 28, 2026
Vulnerability identifier: #VU132609
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-2026-45876
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 error handling in arch_set_shadow_stack_status() when allocating a guarded control stack. A local user can trigger an allocation failure and cause the kernel to use an invalid GCS address to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-45876
Install security update from vendor's repository.