SB2026091324 - Use-after-free in Linux kernel vmw_vsock
Published: September 13, 2026
Security Bulletin ID
SB2026091324
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-80932)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a use-after-free condition.
The vulnerability exists due to improper workqueue synchronization in virtio_vsock_remove() when removing a virtio vsock device. A local user can trigger device removal while dependent work items are queued to cause a use-after-free condition.
The race involves tx_work, send_pkt_work, and rx_work.
Remediation
Install update from vendor's website.