--- id: CVE-2026-2100 title: A flaw was found in p11-kit summary: >- 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-… severity: medium cvss: 5.3 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L' cwe: - CWE-824 vendor: p11-kit_project product: p11-kit affected: - p11-kit - hardened_images - enterprise_linux = 9.0 - enterprise_linux = 10.0 patched: - enterprise_linux_appstream_v_10 - enterprise_linux_appstream_v_9 - enterprise_linux_baseos_v_10 - enterprise_linux_baseos_v_9 - cert_manager_support_for_red_hat_openshift_release 1.20 - cost_management 4 - hardened_images - insights_proxy 1.5 - update_infrastructure 5 published: '2026-03-26' updated: '2026-10-14' sourceUpdated: '2026-10-14T20:17:35.930' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-2100' references: - url: 'https://access.redhat.com/errata/RHSA-2026:18143' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:18599' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:21275' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:22634' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:27998' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:58981' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:7065' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:72502' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:82304' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:82322' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:82347' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:82354' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:82372' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:82857' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:82888' label: secalert@redhat.com - url: 'https://access.redhat.com/security/cve/CVE-2026-2100' label: secalert@redhat.com - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2437308' label: secalert@redhat.com - url: 'https://github.com/p11-glue/p11-kit/pull/740' label: secalert@redhat.com - url: 'https://github.com/p11-glue/p11-kit/releases/tag/0.26.2' label: secalert@redhat.com - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2100.json - url: 'https://www.cve.org/CVERecord?id=CVE-2026-2100' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-2100' tags: - nvd - cve.org - csaf - vex - red-hat epss: 0.01311 epssPercentile: 0.70507 ssvc: exploitation: none automatable: 'yes' technicalImpact: partial timestamp: '2026-03-26T20:30:34.453809Z' ingestedAt: '2026-06-29T13:24:34.813Z' --- ## Overview 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. ## Affected - `p11-kit` - `hardened_images` - `enterprise_linux = 9.0` - `enterprise_linux = 10.0` ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges. ## Vendor advisories - **RHSA-2026:18143** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10) · released 2026-05-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:18143) - **RHSA-2026:18599** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9) · released 2026-05-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:18599) - **RHSA-2026:72502** · Red Hat · fixed in: Cert Manager support for Red Hat OpenShift release 1.20 · released 2026-09-28 · [advisory](https://access.redhat.com/errata/RHSA-2026:72502) - **RHSA-2026:27998** · Red Hat · fixed in: Cost Management 4 · released 2026-06-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:27998) - **RHSA-2026:7065** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-04-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:7065) - **RHSA-2026:22634** · Red Hat · fixed in: Red Hat Insights proxy 1.5 · released 2026-06-02 · [advisory](https://access.redhat.com/errata/RHSA-2026:22634) - **RHSA-2026:58981** · Red Hat · fixed in: Red Hat Update Infrastructure 5 · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58981) - **RHSA-2026:21275** · Red Hat · fixed in: Red Hat Update Infrastructure 5 · released 2026-05-27 · [advisory](https://access.redhat.com/errata/RHSA-2026:21275) - **Red Hat VEX** · Moderate · affected: Red Hat OpenShift Container Platform 4 · updated 2026-09-29 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2100.json)