# CVE-2026-2100: p11-kit: A flaw was found in p11-kit CVE-2026-2100 is fixed in 5 products on 1 platform, first by RHSA-2026:18143, released February 6, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-2100 - Priority: High - CVSS: 7.5 (high) - EPSS: 0.0131 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Feb 6, 2026 ## Description A flaw was found in p11-kit. A remote attacker could exploit this vulnerability by calling the C_DeriveKey function on a remote token with specific IBM kyber or IBM btc derive mechanism parameters set to NULL. This could lead to the RPC-client attempting to return an uninitialized value, potentially resulting in a NULL dereference or undefined behavior. This issue may cause an application level denial of service or other unpredictable system states. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | p11-kit Debian 14 | 0.26.2-2 | [DEBIAN-CVE-2026-2100](https://patchblox.com/security/data/fix/linux/debian-cve-2026-2100.md) | Mar 26, 2026 | | Linux | p11-kit RHEL 10 | 0.26.2-1.el10 | [RHSA-2026:18143](https://patchblox.com/security/data/fix/linux/rhsa-2026-18143.md) | Feb 6, 2026 | | Linux | p11-kit RHEL 9 | 0:0.26.2-1.el9 | [RHSA-2026:18599](https://patchblox.com/security/data/fix/linux/rhsa-2026-18599.md) | May 27, 2026 | | Linux | p11-kit almalinux 10 | 0.26.2-1.el10 | [ALSA-2026:18143](https://patchblox.com/security/data/fix/linux/alsa-2026-18143.md) | May 19, 2026 | | Linux | p11-kit almalinux 9 | 0.26.2-1.el9 | [ALSA-2026:18599](https://patchblox.com/security/data/fix/linux/alsa-2026-18599.md) | May 19, 2026 | | Linux | p11-kit ol 10 | 0:0.26.2-1.el10 | [ELSA-2026-18143](https://patchblox.com/security/data/fix/linux/elsa-2026-18143.md) | Jul 8, 2026 | | Linux | p11-kit ol 9 | 0:0.26.2-1.el9 | [ELSA-2026-18599](https://patchblox.com/security/data/fix/linux/elsa-2026-18599.md) | Jun 12, 2026 | | Linux | p11-kit rocky 10 | 0:0.26.2-1.el10 | [RLSA-2026:18143](https://patchblox.com/security/data/fix/linux/rlsa-2026-18143.md) | May 29, 2026 | | Linux | p11-kit rocky 9 | 0:0.26.2-1.el9 | [RLSA-2026:18599](https://patchblox.com/security/data/fix/linux/rlsa-2026-18599.md) | May 28, 2026 | | Linux | p11-kit-client RHEL 9 | 0:0.26.2-1.el9 | [RHSA-2026:18599](https://patchblox.com/security/data/fix/linux/rhsa-2026-18599.md) | May 27, 2026 | | Linux | p11-kit-client almalinux 10 | 0.26.2-1.el10 | [ALSA-2026:18143](https://patchblox.com/security/data/fix/linux/alsa-2026-18143.md) | May 19, 2026 | | Linux | p11-kit-client almalinux 9 | 0.26.2-1.el9 | [ALSA-2026:18599](https://patchblox.com/security/data/fix/linux/alsa-2026-18599.md) | May 19, 2026 | | Linux | p11-kit-client ol 10 | 0:0.26.2-1.el10 | [ELSA-2026-18143](https://patchblox.com/security/data/fix/linux/elsa-2026-18143.md) | Jul 8, 2026 | | Linux | p11-kit-client ol 9 | 0:0.26.2-1.el9 | [ELSA-2026-18599](https://patchblox.com/security/data/fix/linux/elsa-2026-18599.md) | Jun 12, 2026 | | Linux | p11-kit-devel RHEL 9 | 0:0.26.2-1.el9 | [RHSA-2026:18599](https://patchblox.com/security/data/fix/linux/rhsa-2026-18599.md) | May 27, 2026 | | Linux | p11-kit-devel almalinux 10 | 0.26.2-1.el10 | [ALSA-2026:18143](https://patchblox.com/security/data/fix/linux/alsa-2026-18143.md) | May 19, 2026 | | Linux | p11-kit-devel almalinux 9 | 0.26.2-1.el9 | [ALSA-2026:18599](https://patchblox.com/security/data/fix/linux/alsa-2026-18599.md) | May 19, 2026 | | Linux | p11-kit-devel ol 10 | 0:0.26.2-1.el10 | [ELSA-2026-18143](https://patchblox.com/security/data/fix/linux/elsa-2026-18143.md) | Jul 8, 2026 | | Linux | p11-kit-devel ol 9 | 0:0.26.2-1.el9 | [ELSA-2026-18599](https://patchblox.com/security/data/fix/linux/elsa-2026-18599.md) | Jun 12, 2026 | | Linux | p11-kit-server RHEL 9 | 0:0.26.2-1.el9 | [RHSA-2026:18599](https://patchblox.com/security/data/fix/linux/rhsa-2026-18599.md) | May 27, 2026 | | Linux | p11-kit-server almalinux 10 | 0.26.2-1.el10 | [ALSA-2026:18143](https://patchblox.com/security/data/fix/linux/alsa-2026-18143.md) | May 19, 2026 | | Linux | p11-kit-server almalinux 9 | 0.26.2-1.el9 | [ALSA-2026:18599](https://patchblox.com/security/data/fix/linux/alsa-2026-18599.md) | May 19, 2026 | | Linux | p11-kit-server ol 10 | 0:0.26.2-1.el10 | [ELSA-2026-18143](https://patchblox.com/security/data/fix/linux/elsa-2026-18143.md) | Jul 8, 2026 | | Linux | p11-kit-server ol 9 | 0:0.26.2-1.el9 | [ELSA-2026-18599](https://patchblox.com/security/data/fix/linux/elsa-2026-18599.md) | Jun 12, 2026 | | Linux | p11-kit-trust RHEL 9 | 0:0.26.2-1.el9 | [RHSA-2026:18599](https://patchblox.com/security/data/fix/linux/rhsa-2026-18599.md) | May 27, 2026 | | Linux | p11-kit-trust almalinux 10 | 0.26.2-1.el10 | [ALSA-2026:18143](https://patchblox.com/security/data/fix/linux/alsa-2026-18143.md) | May 19, 2026 | | Linux | p11-kit-trust almalinux 9 | 0.26.2-1.el9 | [ALSA-2026:18599](https://patchblox.com/security/data/fix/linux/alsa-2026-18599.md) | May 19, 2026 | | Linux | p11-kit-trust ol 10 | 0:0.26.2-1.el10 | [ELSA-2026-18143](https://patchblox.com/security/data/fix/linux/elsa-2026-18143.md) | Jul 8, 2026 | | Linux | p11-kit-trust ol 9 | 0:0.26.2-1.el9 | [ELSA-2026-18599](https://patchblox.com/security/data/fix/linux/elsa-2026-18599.md) | Jun 12, 2026 | --- Data as of 2026-11-09T01:18:40Z UTC. 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