NULL pointer dereference in Linux kernel - CVE-2026-98346
Published: October 7, 2026
Vulnerability identifier: #VU153682
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-2026-98346
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 cfg80211_calculate_bi_data() when calculating beacon interval data for wireless devices without an associated network device. A local user can trigger the affected calculation to cause a denial of service.
The problematic radio-mask lookup occurs when a specific radio index is being considered.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-98346
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