Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-23385
Published: March 25, 2026
Vulnerability identifier: #VU124457
CSH Severity: Low
CVSS v4.0: 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-2026-23385
CWE-ID: CWE-703
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper error handling in the netfilter nf_tables component when processing set operations during a flush command. A local user can trigger a failing memory allocation that results in a kernel warning and system instability, leading to a denial of service.
The issue arises during the deactivation of a set in the preparation phase of a flush operation, where a set is cloned unnecessarily, potentially causing memory allocation failure under fault injection conditions.
How to mitigate CVE-2026-23385
Install security update from vendor's repository.