SB2026050233 - Improper Null Termination in Linux kernel netfilter
Published: May 2, 2026
Security Bulletin ID
SB2026050233
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Null Termination (CVE-ID: CVE-2026-43028)
CWE-ID: CWE-170 - Improper Null Termination
CVSSv4: 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
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in x_tables when processing names supplied to functions that expect c-strings. A local user can provide a name that lacks a nul terminator to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/673bbd36cba21d10a10f0932f479df7468e26fbb
- https://git.kernel.org/stable/c/73124608172890306b85f2206d8b3cac20e324f1
- https://git.kernel.org/stable/c/a958a4f90ddd7de0800b33ca9d7b886b7d40f74e
- https://git.kernel.org/stable/c/aa6cd4a8863391e0a64f62d8922cb0af732a2cf2
- https://git.kernel.org/stable/c/bcac50ea0a29d430eedc5ac87b215393b567baa9
- https://git.kernel.org/stable/c/c2d4a3abb15ca14716c6d8b9ffcbcd7c63626af4
- https://git.kernel.org/stable/c/ea01c1b219f5a11c66918abaa6f052e5a74041d6
- https://git.kernel.org/stable/c/f419bdc205894750f4d3ec042bc87a1b9cde1351