CVE-2026-80520

ovpn: fix NULL dereference when killing missing key

HIGH
7.5
CVSS Score
Published: August 26, 2026 at 02:37 PM UTC
Updated: August 27, 2026 at 06:30 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.5
Exploit prediction
EPSS 0.6%

Description

In the Linux kernel, the following vulnerability has been resolved: ovpn: fix NULL dereference when killing missing key ovpn_crypto_kill_key assumes both crypto slots are populated and dereferences each slot before checking it. That is not guaranteed: a peer can have only one installed key, and the kill path may be asked to remove a key that is not present. Read each slot once while holding the crypto state lock, check for NULL before looking at key_id, and only replace the slot that actually matches.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.16 ≤ v < 6.18.466.16 ≤ v < 7.1.106.16 ≤ v < 7.26.1689d3c0e4612afa1c6429ed68d298e35592fbe208
Vendor states this is fixed in 41d44ac7a61e2f74453af40d4fe1b82af9ea0ada (fixed)
Vendor states this is fixed in a47a080d06ee9d94dc6a2da0fc2b9beeeedb92b3 (fixed)
Vendor states this is fixed in acf32a5dff082044cf0fd9492f3c10b7357c15ee (fixed)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.18.46 (unaffected)
Vendor states this is fixed in 7.1.10 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

7.5HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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