CVE-2025-21666 (GCVE-0-2025-21666)
Vulnerability from cvelistv5
Published
2025-01-31 11:25
Modified
2026-05-12 12:03
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a
Version: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a
Version: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a
Version: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a
Version: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a
Version: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a
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