NULL pointer dereference in Linux kernel - CVE-2026-98335
Published: October 7, 2026
Vulnerability identifier: #VU153685
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-2026-98335
CWE-ID: CWE-476
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 a null pointer dereference in mac80211 mesh channel-switch finalization when a mesh interface leaves the mesh with a channel switch still active. A local user can trigger departure from the mesh during an active channel switch to cause a denial of service.
Leaving the mesh releases the channel context, but pending channel-switch finalization work subsequently attempts to rebuild the mesh beacon.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-98335
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.113-1
linux (Debian package) - update to 6.12.113-1