Description
A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_attribute() and p11_rpc_message_get_attribute_array_value() form a mutually-recursive call chain with no recursion depth limit when processing nested CKA_WRAP_TEMPLATE, CKA_UNWRAP_TEMPLATE, and CKA_DERIVE_TEMPLATE attributes. An unauthenticated attacker with local access to the p11-kit RPC Unix domain socket can send a specially crafted request with deeply nested template attributes, causing stack exhaustion and crashing the p11-kit server process and its dependent services.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 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 Discovery 2 | — | — |
| 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 AI (RHOAI) | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 5 | — | — |
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 | 0.26.4-1 | — |
| Debian 13 | p11-kit | No fix yet | — |
| Debian 12 | p11-kit | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | p11-kit | No fix yet | — |
| Ubuntu 25.10 | p11-kit | No fix yet | — |
| Ubuntu 24.04 LTS | p11-kit | 0.25.3-4ubuntu2.2 | USN-8687-1 |
| Ubuntu 22.04 LTS | p11-kit | 0.24.0-6ubuntu0.1 | USN-8687-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | p11-kit | 0.23.20-1ubuntu0.1+esm1 | USN-8687-1 |
| Ubuntu Pro 18.04 LTS | p11-kit | 0.23.9-2ubuntu0.1+esm1 | USN-8687-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | p11-kit +4 | 0.26.4-1.el10_2 | RHSA-2026:49668 |
| RHEL 9 | p11-kit +4 | 0.26.4-1.el9_8 | RHSA-2026:49667 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | p11-kit +6 | 0.26.2-1.2.hum1 | RHSA-2026:38342, RHSA-2026:37469 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | p11-kit +4 | 0.26.4-1.el10_2 | ALSA-2026:49668 |
| AlmaLinux 9 | p11-kit +4 | 0.26.4-1.el9_8 | ALSA-2026:49667 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | p11-kit | 0.26.4-1.el10_2 | RLSA-2026:49668 |
| Rocky Linux 9 | p11-kit | 0.26.4-1.el9_8 | RLSA-2026:49667 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | p11-kit | 0.25.5-160000.3.1 | SUSE-SU-2026:24255-1 |
| SLES 16.0 | p11-kit | 0.25.5-160000.3.1 | SUSE-SU-2026:24255-1 |
| SLE Micro 6.2 | p11-kit | 0.25.5-160000.3.1 | SUSE-SU-2026:24193-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | p11-kit | 0.26.5-1.1 | openSUSE-SU-2026:11862-1 |
| openSUSE Leap 16.0 | p11-kit | 0.25.5-160000.3.1 | openSUSE-SU-2026:22105-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | p11-kit | 0.26.5-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | p11-kit +4 | 0.26.4-1.el10_2 | ELSA-2026-49668 |
| Oracle Linux 9 | p11-kit +4 | 0.26.4-1.el9_8 | ELSA-2026-49667 |
Advisories 18
- ALSA-2026:49667 Moderate: p11-kit security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:49668 Moderate: p11-kit security update AlmaLinux Security Advisories · Oct 29, 2026
- SUSE-SU-2026:24255-1 Security update for p11-kit SUSE / openSUSE Security Updates · Oct 23, 2026
- WID-SEC-2026-2626 Red Hat Enterprise Linux (p11-kit): Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Oct 22, 2026
- SUSE-SU-2026:24193-1 Security update for p11-kit SUSE / openSUSE Security Updates · Oct 21, 2026
- openSUSE-SU-2026:22105-1 Security update for p11-kit SUSE / openSUSE Security Updates · Oct 19, 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-2026:49668 Red Hat Security Advisory: p11-kit security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:49667 Red Hat Security Advisory: p11-kit security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:38342 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:37469 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- openSUSE-SU-2026:11862-1 libp11-kit0-0.26.5-1.1 on GA media SUSE / openSUSE Security Updates · Sep 24, 2026
- USN-8687-1 p11-kit vulnerabilities Ubuntu Security Notices (USN) · Aug 31, 2026
- RLSA-2026:49667 Moderate: p11-kit security update Rocky Linux Security Advisories · Aug 4, 2026
- RLSA-2026:49668 Moderate: p11-kit security update Rocky Linux Security Advisories · Aug 4, 2026
- ELSA-2026-49667 Moderate: p11-kit security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 4, 2026
- ELSA-2026-49668 Moderate: p11-kit security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Aug 3, 2026
References
- RHSA-2026:37469 vendor-advisory
- RHSA-2026:38342 vendor-advisory
- RHSA-2026:49667 vendor-advisory
- RHSA-2026:49668 vendor-advisory
- RHSA-2026:53371 vendor-advisory
- RHSA-2026:54387 vendor-advisory
- RHSA-2026:54760 vendor-advisory
- RHSA-2026:58981 vendor-advisory
- RHSA-2026:72394 vendor-advisory
- RHSA-2026:72395 vendor-advisory
- RHSA-2026:72399 vendor-advisory
- RHSA-2026:72470 vendor-advisory
- RHSA-2026:72475 vendor-advisory
- RHSA-2026:72476 vendor-advisory
- RHSA-2026:72502 vendor-advisory
- RHSA-2026:81201 vendor-advisory
- RHSA-2026:82304 vendor-advisory
- RHSA-2026:82322 vendor-advisory
- RHSA-2026:82336 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-2026-13757 vdb-entry
- RHBZ#2494556 issue-tracking
- https://github.com/advisories/GHSA-p2wm-69qx-x25w