Improper Check for Unusual or Exceptional Conditions in Linux kernel - CVE-2026-93254
Published: September 25, 2026
Vulnerability identifier: #VU152151
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93254
CWE-ID: CWE-754
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to trigger a kernel warning.
The vulnerability exists due to improper interrupt-state handling in arm64_exit_to_kernel_mode() when exiting to kernel mode with interrupts disabled and the GIC_PRIO_PSR_I_SET bit set in the PMR. A local user can trigger the affected kernel exit path to trigger a kernel warning.
The warning occurs when CONFIG_ARM64_DEBUG_PRIORITY_MASKING is enabled.
Affected software
Linux kernel
How to mitigate CVE-2026-93254
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3