Tracker / CVE-2025-21666
CVE-2025-21666
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: vsock: prevent null-ptr-deref in vsock_*[has_data|has_space] Recent reports have shown how we sometimes call vsock_*_has_data() when a vsock socket has been de-assigned from a transport (see attached links), but we shouldn't. Previous commits should have solved the real problems, but we may have more in the future, so to avoid null-ptr-deref, we can return 0 (no space, no data available) but with a warning. This way the code should continue to run in a nearly consistent state and have a warning that allows us to debug future problems.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 5.16 → 6.1.127 |
| linux | linux_kernel · 5.5 → 5.15.177 |
| linux | linux_kernel · 6.2 → 6.6.74 |
| linux | linux_kernel · 6.7 → 6.12.11 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.