Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L L N U N N H 5.5 .0023 13.7 —
AFFECTED Product Versions Fixed Linux c0cfa2d8a788fcf45df5bf4070ab2474c88d543a – — Linux 5.5 – 5.10.234
TIMELINE Dec 29 Reserved by Linux Jan 31 Published (CNA: Linux) Jul 30 RESCORED — CVE-2025-21669 (Linux). CVSS 7.8 → 5.5 (NVD).
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: discard packets if the transport changes If the socket has been de-assigned or assigned to another transport, we must discard any packets received because they are not expected and would cause issues when we access vsk->transport. A possible scenario is described by Hyunwoo Kim in the attached link, where after a first connect() interrupted by a signal, and a second connect() failed, we can find `vsk->transport` at NULL, leading to a NULL pointer dereference.
| Date | Event | Detail |
|---|---|---|
| December 29, 2024 | Reserved | Reserved by Linux |
| January 31, 2025 | Published | Published (CNA: Linux) |
| July 30, 2026 | RESCORED | RESCORED — CVE-2025-21669 (Linux). CVSS 7.8 → 5.5 (NVD). |
Authoritative record: CVE-2025-21669 at cve.org
Vendors: linux
Weaknesses: CWE-476
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-21669 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.