SB2026072735 - Improper Initialization in Linux kernel core en_accel driver
Published: July 27, 2026
Security Bulletin ID
SB2026072735
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 Initialization (CVE-ID: CVE-2026-64522)
CWE-ID: CWE-665 - Improper Initialization
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 state management in mlx5e_xfrm_add_state() when handling acquire-flow temporary security associations for IPsec offload. A local user can trigger creation of a temporary acquire SA to cause a denial of service.
The issue occurs because the acquire-SA path can reach mode-unblock logic without a matching mode-block operation.
Remediation
Install update from vendor's website.