SB2026020533 - Improper locking in Linux kernel amazon ena driver
Published: February 5, 2026
Security Bulletin ID
SB2026020533
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 security vulnerability.
1) Improper locking (CVE-ID: CVE-2026-23045)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the ena_devlink_disable_phc_param() and ena_devlink_configure_params() functions in drivers/net/ethernet/amazon/ena/ena_devlink.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.