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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| p11-glue | p11-kit | < 0.26.2 | 0.26.2 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.17 | — | — |
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 | — | — |
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.20 | — | — |
| Red Hat | Cost Management 4 | — | — |
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat Insights proxy 1.5 | — | — |
| Red Hat | Red Hat Update Infrastructure 5 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | p11-kit | 0.26.2-2 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | p11-kit +4 | 0.26.2-1.el10 | RHSA-2026:18143 |
| RHEL 9 | p11-kit +4 | 0.26.2-1.el9 | RHSA-2026:18599 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | p11-kit +6 | 0.26.2-1.1.hum1 | RHSA-2026:7065 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | p11-kit +4 | 0.26.2-1.el10 | ALSA-2026:18143 |
| AlmaLinux 9 | p11-kit +4 | 0.26.2-1.el9 | ALSA-2026:18599 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | p11-kit | 0.26.2-1.el10 | RLSA-2026:18143 |
| Rocky Linux 9 | p11-kit | 0.26.2-1.el9 | RLSA-2026:18599 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | p11-kit | 0.26.2-1.1 | openSUSE-SU-2026:10169-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | p11-kit | 0.26.2-r0 | — |
| Alpine v3.23 | p11-kit | 0.26.2-r0 | — |
| Alpine v3.22 | p11-kit | 0.26.2-r0 | — |
| Alpine v3.21 | p11-kit | 0.26.2-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | p11-kit +4 | 0.26.2-1.el10 | ELSA-2026-18143 |
| Oracle Linux 9 | p11-kit +4 | 0.26.2-1.el9 | ELSA-2026-18599 |
Advisories 13
- ALSA-2026:18599 Moderate: p11-kit security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:18143 Moderate: p11-kit security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-1267 Red Hat Hardened Images RPMs: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 21, 2026
- WID-SEC-2026-3623 IBM DataPower Gateway: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 18, 2026
- NCSC-2026-0431 Kwetsbaarheden verholpen in IBM DataPower Gateway en onderliggende componenten NCSC-NL (Netherlands) · Oct 16, 2026
- RHSA-2026:7065 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:18599 Red Hat Security Advisory: p11-kit security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:18143 Red Hat Security Advisory: p11-kit security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- ELSA-2026-18143 Moderate: p11-kit security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 8, 2026
- ELSA-2026-18599 Moderate: p11-kit security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 12, 2026
- RLSA-2026:18143 Moderate: p11-kit security update Rocky Linux Security Advisories · May 29, 2026
- RLSA-2026:18599 Moderate: p11-kit security update Rocky Linux Security Advisories · May 28, 2026
- openSUSE-SU-2026:10169-1 libp11-kit0-0.26.2-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
References
- RHSA-2026:18143 vendor-advisory
- RHSA-2026:18599 vendor-advisory
- RHSA-2026:21275 vendor-advisory
- RHSA-2026:22634 vendor-advisory
- RHSA-2026:27998 vendor-advisory
- RHSA-2026:58981 vendor-advisory
- RHSA-2026:7065 vendor-advisory
- RHSA-2026:72502 vendor-advisory
- RHSA-2026:82304 vendor-advisory
- RHSA-2026:82322 vendor-advisory
- RHSA-2026:82347 vendor-advisory
- RHSA-2026:82354 vendor-advisory
- RHSA-2026:82372 vendor-advisory
- RHSA-2026:82857 vendor-advisory
- RHSA-2026:82888 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-2100 vdb-entry
- RHBZ#2437308 issue-tracking
- https://github.com/p11-glue/p11-kit/pull/740
- https://github.com/p11-glue/p11-kit/releases/tag/0.26.2