CVE-2026-80520
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 89d3c0e4612afa1c6429ed68d298e35592fbe208 < a47a080d06ee9d94dc6a2da0fc2b9beeeedb92b3 | affected |
| Linux | Linux | 89d3c0e4612afa1c6429ed68d298e35592fbe208 < acf32a5dff082044cf0fd9492f3c10b7357c15ee | affected |
| Linux | Linux | 89d3c0e4612afa1c6429ed68d298e35592fbe208 < 41d44ac7a61e2f74453af40d4fe1b82af9ea0ada | affected |
| Linux | Linux | 6.16 | affected |
| Linux | Linux | 0 < 6.16 | unaffected |
| Linux | Linux | 6.18.46 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.10 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/a47a080d06ee9d94dc6a2da0fc2b9beeeedb92b3
- https://git.kernel.org/stable/c/acf32a5dff082044cf0fd9492f3c10b7357c15ee
- https://git.kernel.org/stable/c/41d44ac7a61e2f74453af40d4fe1b82af9ea0ada
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