SB20260812245 - Integer overflow in Linux kernel tipc
Published: August 12, 2026
Security Bulletin ID
SB20260812245
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) Integer overflow (CVE-ID: CVE-2026-68289)
CWE-ID: CWE-190 - Integer overflow
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 integer overflow in tipc_recvmsg() and tipc_recvstream() when processing oversized user-supplied buffer lengths. A local user can supply an excessively large buffer length via io_uring provided buffers to cause a denial of service.
The issue can trigger a WARN_ON that may lead to a kernel panic on systems configured with panic_on_warn.
Remediation
Install update from vendor's website.