NULL pointer dereference in Linux kernel - CVE-2026-98302
Published: October 7, 2026
Vulnerability identifier: #VU153716
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98302
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in the Linux kernel skfp FDDI driver's adapter reset path when setting the MAC address on a down interface that has never been brought up. A local privileged user can set the interface's MAC address to trigger a kernel oops and cause a denial of service.
Exploitation requires the CAP_NET_ADMIN capability.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-98302
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
External References
- https://git.kernel.org/stable/c/438131e7ae847e907d345bf504d7e25585561b5c
- https://git.kernel.org/stable/c/5fd0f401b3eee95c93daa35ef99cb03d676031f0
- https://git.kernel.org/stable/c/616ba18b2cfb72b7bea214bdd72df2485b2e37dc
- https://git.kernel.org/stable/c/731db6110b3148331ed8d5d11a564bfd520721d9
- https://git.kernel.org/stable/c/7c8810c2e69c3d9ca6df870b40ae9218e50b4fb1
- https://git.kernel.org/stable/c/822903ed991971780db1db1be31a4f00e2b13e30
- https://git.kernel.org/stable/c/835903bea770ad96ab4322e18d98e00f8e0b39c3
- https://git.kernel.org/stable/c/d6f63fdb298d546a47790cb373db65462c264d04