SB20260815302 - Improper input validation in Linux kernel netfilter
Published: August 15, 2026
Security Bulletin ID
SB20260815302
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 input validation (CVE-ID: CVE-2026-72416)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 6.8 [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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in nft_compat ebtables target validation when handling bridge table targets. A local user can use a non-bridge target in the ebtables emulation path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/33e1875d6b5b552a2e5652b40074c604199354ee
- https://git.kernel.org/stable/c/9dbba7e694ec045f21ede2f892fb42b81b4e1692
- https://git.kernel.org/stable/c/b3f7a84540a0d014ec42343ff5909657c1bd1994
- https://git.kernel.org/stable/c/c129b0185e707dce405968e21afccd5728b2ce63
- https://git.kernel.org/stable/c/efc17b9240d821c424bc5191a5c6e9384a06293e