SB2026090988 - Race condition in Linux kernel 8021q
Published: September 9, 2026
Security Bulletin ID
SB2026090988
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) Race condition (CVE-ID: CVE-2026-80925)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/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 a race condition in VLAN device feature transfer handling when toggling hardware VLAN transmit offload. A local user can toggle hardware VLAN transmit offload during transmit processing to cause a denial of service.
Remediation
Install update from vendor's website.