CVE-2026-80519ovpn: finish crypto callback cleanup before peer release
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 8534731dbf2d52a539b94defd06d2a8d3514aacb before a3a676495c6419e0cca04d6a67227604e92a3d5a; 8534731dbf2d52a539b94defd06d2a8d3514aacb builds before 4b0de8be288f5fbec5d8ee64ed4e8b14bf19b517; 8534731dbf2d52a539b94defd06d2a8d3514aacb builds before 9e163917a86c6adfbe150e13f4c73653a54616de | CNA record |
References
- https://git.kernel.org/stable/c/a3a676495c6419e0cca04d6a67227604e92a3d5a
- https://git.kernel.org/stable/c/4b0de8be288f5fbec5d8ee64ed4e8b14bf19b517
- https://git.kernel.org/stable/c/9e163917a86c6adfbe150e13f4c73653a54616de
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.