Deadlock in Linux kernel - CVE-2026-90158
Published: September 19, 2026
Vulnerability identifier: #VU151333
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90158
CWE-ID: CWE-833
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 locking in nfcon_device() when determining active consoles. A local user can trigger the console device callback to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90158
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/2f8e3cad53b5c36ab0ed5d3195bfc55c59ea61a5
- https://git.kernel.org/stable/c/7d3f15a664d115584fc177b5f2cfbdb3e5a50d60
- https://git.kernel.org/stable/c/be98f92fc244688a6bdecbc834cf2cd243056d9d
- https://git.kernel.org/stable/c/d73441232f1f067eb659e94447b1353c16609711
- https://git.kernel.org/stable/c/e5e11274b5512e24a346ed83f8dd85e3389d2f4b