SB20260508109 - Race condition in Linux kernel usb class driver
Published: May 8, 2026
Security Bulletin ID
SB20260508109
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) Race condition (CVE-ID: CVE-2026-43427)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to a race condition in the cdc-wdm read code path when processing read operations. A local user can trigger the race and read uninitialized memory to disclose sensitive information.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/170e8daca24da6edb4be82ab01abf44e87af387b
- https://git.kernel.org/stable/c/276aef0fd2b92f41b920ac891c72cadeee957934
- https://git.kernel.org/stable/c/4ee3062bf2c9a722afef429826e8607eaf3fc6a0
- https://git.kernel.org/stable/c/638328ca9c17ae6511ad62198c57bae32ffa3c91
- https://git.kernel.org/stable/c/67ed312124bb1b61858778ac0b985b48961c862a
- https://git.kernel.org/stable/c/8df672bfe3ec2268c2636584202755898e547173
- https://git.kernel.org/stable/c/c8fa96ed021923dae147bcd9f9205b8df7b82360
- https://git.kernel.org/stable/c/e3c874b05901dc519054b5107d16620e6d2b5fea