CVE-2026-43058

Description

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix pass-by-value structs causing MSAN warnings vidtv_ts_null_write_into() and vidtv_ts_pcr_write_into() take their argument structs by value, causing MSAN to report uninit-value warnings. While only vidtv_ts_null_write_into() has triggered a report so far, both functions share the same issue. Fix by passing both structs by const pointer instead, avoiding the stack copy of the struct along with its MSAN shadow and origin metadata. The functions do not modify the structs, which is enforced by the const qualifier.

Is your site exposed to CVE-2026-43058?

Run a free security scan — no signup, results in seconds.

EPSS — Exploit Prediction

0.0001

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

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

Frequently Asked Questions

What is CVE-2026-43058? +

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix pass-by-value structs causing MSAN warnings vidtv_ts_null_write_into() and vidtv_ts_pcr_write_into() take their argument structs by value, causing MSAN to report uninit-value warnings. While only vidtv_ts_null_write_into() has triggered a report so far, both functions share the same issue. Fix by passing both structs by const pointer instead, avoiding the stack copy of the struct along with its MSAN shadow and origin metadata. The functions do not modify the structs, which is enforced by the const qualifier.

How do I check if I'm vulnerable to CVE-2026-43058? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.