Use of Uninitialized Variable in Linux kernel - CVE-2026-43058
Published: May 2, 2026
Vulnerability identifier: #VU128854
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2026-43058
CWE-ID: CWE-457
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to use of uninitialized memory in vidtv_ts_null_write_into() and vidtv_ts_pcr_write_into() when processing struct arguments passed by value. A local user can trigger the affected code path to disclose sensitive information.
How to mitigate CVE-2026-43058
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/1b2820c8a9887981634020db19f1a2425558b88e
- https://git.kernel.org/stable/c/57b01d945ed68cebe486d495dadc4901a96d3aaa
- https://git.kernel.org/stable/c/5f8e73bde67e931468bc2a1860d78d72f0c6ba41
- https://git.kernel.org/stable/c/6d75a9ec5bdb8cf8382eaf8f8fe831ba7d58a9d4
- https://git.kernel.org/stable/c/be57e52e27c7cbfb400a8f255e475cbcff242baa
- https://git.kernel.org/stable/c/e3957eb26a3d570aefc6bb184fa8b8a1e9a4e508