ovpn: fix NULL dereference when killing missing key

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80520
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-26 15:17:05 UTC
Updated2026-08-27 06:17:30 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.004320000 probability, percentile 0.358980000 (date 2026-08-27)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 89d3c0e4612afa1c6429ed68d298e35592fbe208 a47a080d06ee9d94dc6a2da0fc2b9beeeedb92b3 git Not specified
CNA Linux Linux affected 89d3c0e4612afa1c6429ed68d298e35592fbe208 acf32a5dff082044cf0fd9492f3c10b7357c15ee git Not specified
CNA Linux Linux affected 89d3c0e4612afa1c6429ed68d298e35592fbe208 41d44ac7a61e2f74453af40d4fe1b82af9ea0ada git Not specified
CNA Linux Linux affected 6.16 Not specified
CNA Linux Linux unaffected 6.16 semver Not specified
CNA Linux Linux unaffected 6.18.46 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.10 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a47a080d06ee9d94dc6a2da0fc2b9beeeedb92b3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/acf32a5dff082044cf0fd9492f3c10b7357c15ee 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/41d44ac7a61e2f74453af40d4fe1b82af9ea0ada 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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