CVE-2025-21666

CVE-2025-21666 involves a null-pointer dereference in the Linux kernel when vsock_*_has_data/has_space is invoked on a socket that has been de-assigned from a transport. The problem is mitigated by returning 0 (no space/data) with a warning to keep execution stable. Connected documents confirm th...

CVE-2025-21666

In the Linux kernel, the following vulnerability has been resolved: vsock: prevent null-ptr-deref in vsockhasdata|hasspace Recent reports have shown how we sometimes call vsockhasdata when a vsock socket has been de-assigned from a transport see attached links, but we shouldn't. Previous commits...