ovpn: finish crypto callback cleanup before peer release (CVE-2026-80519) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80519

ovpn: finish crypto callback cleanup before peer release

Answer in brief

CVE-2026-80519 records a Unknown severity 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.

Published Aug 26, 2026Updated Aug 26, 2026Source checked Aug 26, 2026First seen by HOL Aug 26, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. 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.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=8534731dbf2d52a539b94defd06d2a8d3514aacb <a3a676495c6419e0cca04d6a67227604e92a3d5a \|\| >=8534731dbf2d52a539b94defd06d2a8d3514aacb <4b0de8be288f5fbec5d8ee64ed4e8b14bf19b517 \|\| >=8534731dbf2d52a539b94defd06d2a8d3514aacb <9e163917a86c6adfbe150e13f4c73653a54616de	a3a676495c6419e0cca04d6a67227604e92a3d5a, 4b0de8be288f5fbec5d8ee64ed4e8b14bf19b517, 9e163917a86c6adfbe150e13f4c73653a54616de
Linux/Linuxgeneric	6.16	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to a3a676495c6419e0cca04d6a67227604e92a3d5a if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 26, 2026

Sources and claim methodology

Upstream source description

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.