#VU121402 Improper locking in Linux kernel - CVE-2025-68823

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU121402

#VU121402 Improper locking in Linux kernel - CVE-2025-68823

Published: January 14, 2026


Vulnerability identifier: #VU121402
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-2025-68823
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the ublk_get_uring_cmd_pdu(), __ublk_complete_rq(), __ublk_abort_rq() and __ublk_do_auto_buf_reg() functions in drivers/block/ublk_drv.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's repository.

External links