# P11-kit: null dereference via c_derivekey with specific null parameters CVE record · `CVE-2026-2100` - **Identifiers:** `CVE-2026-2100` - **State:** Confirmed - **Severity:** CVSS 5.3 Medium - **Critical:** No - **CNA:** redhat - **Weakness (CWE):** [CWE-824](https://cwe.mitre.org/data/definitions/824.html) - **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md) - **Technologies:** [p11-glue p11-kit](https://agentprime.io/advisories/technology/p11-glue-p11-kit.md) · [Red Hat Enterprise Linux 10](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-10.md) · [Red Hat Enterprise Linux 9](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-9.md) · [Cert Manager support for Red Hat OpenShift release 1.17](https://agentprime.io/advisories/technology/cert-manager-support-for-red-hat-openshift-release-1-17.md) · [Cert Manager support for Red Hat OpenShift release 1.18](https://agentprime.io/advisories/technology/cert-manager-support-for-red-hat-openshift-release-1-18.md) · [Cert Manager support for Red Hat OpenShift release 1.20](https://agentprime.io/advisories/technology/cert-manager-support-for-red-hat-openshift-release-1-20.md) · [Red Hat Cost Management 4](https://agentprime.io/advisories/technology/red-hat-cost-management-4.md) · [Red Hat Hardened Images](https://agentprime.io/advisories/technology/red-hat-hardened-images.md) · [Red Hat Insights proxy 1.5](https://agentprime.io/advisories/technology/red-hat-insights-proxy-1-5.md) · [Red Hat Update Infrastructure 5](https://agentprime.io/advisories/technology/red-hat-update-infrastructure-5.md) · [Red Hat Enterprise Linux 6](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-6.md) · [Red Hat Enterprise Linux 7](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-7.md) · [Red Hat Enterprise Linux 8](https://agentprime.io/advisories/technology/red-hat-enterprise-linux-8.md) · [Red Hat OpenShift Container Platform 4](https://agentprime.io/advisories/technology/red-hat-openshift-container-platform-4.md) - **Published:** 26 Mar 2026 - **Updated:** 5 Nov 2026 - **Reviewed by a person:** No Published by the CVE Program (CNA: redhat) at 26 Mar 2026, 20:01 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. ## Affected products, as the CNA wrote them - Vendor: p11-glue. Product: p11-kit. - affected: `before 0.26.2` (semver) - Other versions: unaffected - Vendor: Red Hat. Product: Red Hat Enterprise Linux 10. - unaffected: `0:0.26.2-1.el10 to before *` (rpm) - Other versions: affected - Package name: `p11-kit` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9. - unaffected: `0:0.26.2-1.el9 to before *` (rpm) - Other versions: affected - Package name: `p11-kit` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 9. - unaffected: `0:0.26.2-1.el9 to before *` (rpm) - Other versions: affected - Package name: `p11-kit` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791371080 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-acmesolver-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791371069 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791788287 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.17. - unaffected: `1791970484 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-bundle` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791459707 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-acmesolver-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791459711 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/jetstack-cert-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791459759 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-istio-csr-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1789029076 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.18. - unaffected: `1791966259 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-operator-bundle` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cert Manager support for Red Hat OpenShift release 1.20. - unaffected: `1790598593 to before *` (rpm) - Other versions: affected - Package name: `cert-manager/cert-manager-trust-manager-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Cost Management 4. - unaffected: `1780946239 to before *` (rpm) - Other versions: affected - Package name: `costmanagement/costmanagement-metrics-rhel9-operator` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Hardened Images. - unaffected: `0.26.2-1.1.hum1 to before *` (rpm) - Other versions: affected - Package name: `p11-kit-main` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Insights proxy 1.5. - unaffected: `1780420428 to before *` (rpm) - Other versions: affected - Package name: `insights-proxy/insights-proxy-container-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Update Infrastructure 5. - unaffected: `1779798159 to before *` (rpm) - Other versions: affected - Package name: `rhui5/cds-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Update Infrastructure 5. - unaffected: `1779798164 to before *` (rpm) - Other versions: affected - Package name: `rhui5/haproxy-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Update Infrastructure 5. - unaffected: `1779798165 to before *` (rpm) - Other versions: affected - Package name: `rhui5/installer-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Update Infrastructure 5. - unaffected: `1779798222 to before *` (rpm) - Other versions: affected - Package name: `rhui5/rhua-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Update Infrastructure 5. - unaffected: `1787241211 to before *` (rpm) - Other versions: affected - Package name: `rhui5/cds-kubernetes-tp-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Update Infrastructure 5. - unaffected: `1787135742 to before *` (rpm) - Other versions: affected - Package name: `rhui5/installer-tp-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Update Infrastructure 5. - unaffected: `1787241260 to before *` (rpm) - Other versions: affected - Package name: `rhui5/rhua-tp-rhel9` - Collection: `https://catalog.redhat.com/software/containers/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 6. - No versions given - Other versions: unaffected - Package name: `p11-kit` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 7. - No versions given - Other versions: unaffected - Package name: `p11-kit` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat Enterprise Linux 8. - No versions given - Other versions: unaffected - Package name: `p11-kit` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4. - No versions given - Other versions: unknown - Package name: `openshift4/ose-hypershift-rhel9` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4. - No versions given - Other versions: unaffected - Package name: `openshift/ose-rhel-coreos-8` - Collection: `https://access.redhat.com/downloads/content/package-browser/` - Vendor: Red Hat. Product: Red Hat OpenShift Container Platform 4. - No versions given - Other versions: unaffected - Package name: `openshift/ose-rhel-coreos-9` - Collection: `https://access.redhat.com/downloads/content/package-browser/` ## Not analysed yet We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter. ## Severity and exploitation - 5.3 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`, from CNA (redhat) - **CISA KEV:** Not listed. - **EPSS:** 0.013, the 70th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline - 26 Mar 2026, 20:01 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-2100) - 26 Mar 2026, 21:17 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-2100) ## Sources - [CVE List: CVE-2026-2100](https://www.cve.org/CVERecord?id=CVE-2026-2100) - [NVD: CVE-2026-2100](https://nvd.nist.gov/vuln/detail/CVE-2026-2100) ### References from the CNA - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vendor-advisory, redhat) - (vdb-entry, redhat) - (issue-tracking, redhat) - - Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description. ## Check whether this affects you This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run. - With the agentprime MCP server (), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: - As JSON: - Everything that needs attention now: --- The web page: . Everything for agents: .