# CVE-2026-22791: libopencryptoki0: openCryptoki is a PKCS#11 library and tools for Linux and AIX

CVE-2026-22791 is fixed in 3 products on 1 platform, first by SUSE-SU-2026:0291-1, released January 26, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-22791
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0028
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 13, 2026

## Description

openCryptoki is a PKCS#11 library and tools for Linux and AIX. In 3.25.0 and 3.26.0, there is a heap buffer overflow vulnerability in the CKM_ECDH_AES_KEY_WRAP implementation allows an attacker with local access to cause out-of-bounds writes in the host process by supplying a compressed EC public key and invoking C_WrapKey. This can lead to heap corruption, or denial-of-service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libopencryptoki0 Ubuntu 26.04.1 LTS (resolute) | 3.26.0+dfsg-0ubuntu1.1 | [libopencryptoki0 3.26.0+dfsg-0ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libopencryptoki0-3.26.0-dfsg-0ubuntu1.1.md) | Apr 16, 2026 |
| Linux | openCryptoki opensuse-leap 16.0 | 3.27.0-160000.1.1 | [OPENSUSE-SU-2026:21059-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21059-1.md) | Jun 25, 2026 |
| Linux | openCryptoki sles 15.7 | 3.26.0-150700.5.9.1 | [SUSE-SU-2026:0291-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0291-1.md) | Jan 26, 2026 |
| Linux | openCryptoki sles 16.0 | 3.27.0-160000.1.1 | [SUSE-SU-2026:22365-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22365-1.md) | Jun 25, 2026 |
| Linux | opencryptoki Ubuntu 26.04.1 LTS (resolute) | 3.26.0+dfsg-0ubuntu1.1 | [opencryptoki 3.26.0+dfsg-0ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-opencryptoki-3.26.0-dfsg-0ubuntu1.1.md) | Apr 16, 2026 |

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Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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