Improper locking in Linux kernel - CVE-2026-80562
Published: August 27, 2026
Vulnerability identifier: #VU145929
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-2026-80562
CWE-ID: CWE-667
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 lock type selection in the gpio-ml-ioh driver irq callbacks when invoking irq_set_type, irq_enable, or irq_disable while the IRQ descriptor lock is held in a non-sleepable context. A local user can trigger these callbacks to cause a denial of service.
The issue is specific to PREEMPT_RT kernels.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-80562
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.107-1
linux (Debian package) - update to 6.12.107-1