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Vulnerability · Published Jun 29, 2026 · Assigned by redhat

CVE-2026-13757P11-kit: stack exhaustion via unbounded recursion in rpc attribute parsing

Medium 6.2

In plain English

A medium-severity security flaw in Cert Manager support for Red Hat OpenShift release 1.17 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.2%top 95.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10p11-kit0.26.4-1.el10_2ALSA-2026:49668
AlmaLinux:9p11-kit0.26.4-1.el9_8ALSA-2026:49667
AlmaLinux:10p11-kit-client0.26.4-1.el10_2ALSA-2026:49668
AlmaLinux:9p11-kit-client0.26.4-1.el9_8ALSA-2026:49667
AlmaLinux:10p11-kit-devel0.26.4-1.el10_2ALSA-2026:49668
AlmaLinux:9p11-kit-devel0.26.4-1.el9_8ALSA-2026:49667
AlmaLinux:10p11-kit-server0.26.4-1.el10_2ALSA-2026:49668
AlmaLinux:9p11-kit-server0.26.4-1.el9_8ALSA-2026:49667
AlmaLinux:10p11-kit-trust0.26.4-1.el10_2ALSA-2026:49668
AlmaLinux:9p11-kit-trust0.26.4-1.el9_8ALSA-2026:49667
Debian:12p11-kitno fix listedDEBIAN-CVE-2026-13757
Debian:13p11-kitno fix listedDEBIAN-CVE-2026-13757
Debian:14p11-kit0.26.4-1DEBIAN-CVE-2026-13757
Rocky Linux:10p11-kit0:0.26.4-1.el10_2RLSA-2026:49668
Rocky Linux:9p11-kit0:0.26.4-1.el9_8RLSA-2026:49667
Ubuntu:22.04:LTSp11-kit0.24.0-6ubuntu0.1USN-8687-1
Ubuntu:22.04:LTSp11-kit0.24.0-6ubuntu0.1UBUNTU-CVE-2026-13757
Ubuntu:24.04:LTSp11-kit0.25.3-4ubuntu2.2USN-8687-1
Ubuntu:24.04:LTSp11-kit0.25.3-4ubuntu2.2UBUNTU-CVE-2026-13757
Ubuntu:25.10p11-kitno fix listedUBUNTU-CVE-2026-13757
Ubuntu:26.04:LTSp11-kitno fix listedUBUNTU-CVE-2026-13757

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 see references
Red Hat Cost Management 4 see references
Red Hat Red Hat Discovery 2 see references
Red Hat Red Hat Discovery 2 see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat Insights proxy 1.5 see references
Red Hat Red Hat Update Infrastructure 5 see references
Red Hat Red Hat Update Infrastructure 5 see references
Red Hat Red Hat Update Infrastructure 5 see references

Weakness: CWE-674 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References