SB20260625194 - Use of Uninitialized Variable in Linux kernel net netdevsim driver
Published: June 25, 2026
Security Bulletin ID
SB20260625194
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 of Uninitialized Variable (CVE-ID: CVE-2026-52985)
CWE-ID: CWE-457 - Use of Uninitialized Variable
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 use of uninitialized memory in nsim_dev_trap_skb_build when building a dummy sk_buff IP header. A local user can trigger the vulnerable code path to disclose sensitive information.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/175556c049eaec14efde8c6475e763b7579b9de7
- https://git.kernel.org/stable/c/1b7b6ae0e93b8d512e208b1378d74af052e4f4e7
- https://git.kernel.org/stable/c/35eaa6d8d6c2ee65e96f507add856e0eacf24591
- https://git.kernel.org/stable/c/6e2cfd0904976e701d7a76b86b694e72af230ab0
- https://git.kernel.org/stable/c/750d0091bebf44975421268d37484ef87060d263
- https://git.kernel.org/stable/c/818f7673ed7f4a29d4b9cee8184c47d6e57162b4
- https://git.kernel.org/stable/c/978ca6ff789f1f19c03288ac20cc1f4774e88490
- https://git.kernel.org/stable/c/bc6002865e8c4fcf9e94975f7cf023448d8764e2