SB20260815194 - Improper input validation in Linux kernel tipc
Published: August 15, 2026
Security Bulletin ID
SB20260815194
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote 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-2026-74281)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in tipc_update_nametbl() when processing peer-advertised PUBLICATION items. A remote attacker can send specially crafted bindings with inverted service ranges to cause a denial of service.
The issue causes unbounded binding-table memory to be leaked for the lifetime of the namespace.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2afb648f7b99216c687db1f89739c995e1144153
- https://git.kernel.org/stable/c/581ef56e5c34d475056ce086dc2ba0e872ba6857
- https://git.kernel.org/stable/c/7e401233f9bb74a626e70698d0d62f3a94ac0676
- https://git.kernel.org/stable/c/973bf0ed896b9898668dbadb82ed849d7d573010
- https://git.kernel.org/stable/c/cd1955f81bd8ebeef51b324989ac871ad1947fb6
- https://git.kernel.org/stable/c/f1715d92ee3095d9215b493a8603a81f646fcf61
- https://git.kernel.org/stable/c/f683200b83a0085d4e11abea8c1fdd9fdfb95b0b