Answer in brief
CVE-2026-80519 records a Critical severity (CVSS 9.8) vulnerability in ovpn: finish crypto callback cleanup before peer release. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8534731dbf2d52a539b94defd06d2a8d3514aacb <a3a676495c6419e0cca04d6a67227604e92a3d5a || >=8534731dbf2d52a539b94defd06d2a8d3514aacb <4b0de8be288f5fbec5d8ee64ed4e8b14bf19b517 || >=8534731dbf2d52a539b94defd06d2a8d3514aacb <9e163917a86c6adfbe150e13f4c73653a54616de | a3a676495c6419e0cca04d6a67227604e92a3d5a, 4b0de8be288f5fbec5d8ee64ed4e8b14bf19b517, 9e163917a86c6adfbe150e13f4c73653a54616de |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 26, 2026
In the Linux kernel, the following vulnerability has been resolved: ovpn: finish crypto callback cleanup before peer release Crypto completion callbacks hold both key-slot and peer references. The peer reference pins the netdev, and dropping the last peer reference can let netdev unregistration and module removal make progress. Do not release that peer reference before the callback has finished its own cleanup. If ovpn_crypto_key_slot_put runs after ovpn_peer_put, it can schedule an RCU callback backed by module text after ovpn_cleanup rcu_barrier has already run. The TX error path also freed the remaining skb after ovpn_peer_put, leaving callback cleanup outside the peer/netdev lifetime window. Release the key slot and free any remaining skb first, then drop the peer reference as the last callback action.
Quoted source text, attributed separately from HOL analysis.