#VU121397 NULL pointer dereference in Linux kernel - CVE-2025-68797
Published: January 14, 2026
Vulnerability identifier: #VU121397
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2025-68797
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ac_ioctl() function in drivers/char/applicom.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0b8b353e09888bccee405e0dd6feafb60360f478
- https://git.kernel.org/stable/c/74883565c621eec6cd2e35fe6d27454cf2810c23
- https://git.kernel.org/stable/c/82d12088c297fa1cef670e1718b3d24f414c23f7
- https://git.kernel.org/stable/c/d285517429a75423789e6408653e57b6fdfc8e54
- https://git.kernel.org/stable/c/f83e3e9f89181b42f6076a115d767a7552c4a39e