SB2026091311 - Use-after-free in Linux kernel realtek rtl8xxxu driver
Published: September 13, 2026
Security Bulletin ID
SB2026091311
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical 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-2026-80947)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 0 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows an attacker with physical access to trigger a use-after-free.
The vulnerability exists due to a use-after-free in the rtl8xxxu RX URB workqueue teardown when a device is disconnected during active receive traffic. An attacker with physical access can disconnect the device during active receive traffic to trigger a use-after-free.
Remediation
Install update from vendor's website.