p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing
cve CVE-2026-13757 2 sources, 2 claims · Watch
- Severity
- MEDIUM NVDmoderate Red Hat
- CVSS
- 6.2 NVD6.2 Red Hat
- Vendor
- Red Hat NVD
- Product
- Red Hat Enterprise Linux 10 NVD
- CWE
- CWE-674 NVDCWE-674 Red Hat
How far exploitation has got
- No public code known
- Proof of concept
- Proof of concept, verified
- A Metasploit module
- Exploited in the wild
- Used in ransomware campaigns
Timeline
| 2026-06-23 | first spoke of it: p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing | Red Hat |
| 2026-06-29 | first spoke of it: 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. | NVD |
What it is to other things
| affects | p11-kit_project/p11-kit NVD |
| affects | redhat/enterprise_linux NVD |
| affects | redhat/hardened_images NVD |
| affects | redhat/openshift_container_platform NVD |
| made_by | p11-kit_project NVD |
| made_by | redhat NVD |
In words only, so not counted until a person confirms one:
| made_by | red_hatNVD says “Red Hat” |
| affects | red_hat/red_hat_enterprise_linux_10NVD says “Red Hat · Red Hat Enterprise Linux 10” |
Every value, with what each source said and its receipt
| Property | Source | Said | Means here | ||||
|---|---|---|---|---|---|---|---|
| Automatable automatable | NVD | no At least one of those steps needs a person. receipt
What the source handed over{
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} | — | ||||
| CVSS cvss | NVD | 6.2receipt
What the source handed over{
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} | — | ||||
| CVSS cvss | Red Hat | 6.2receipt
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} | — | ||||
| CVSS vector cvss_vector | NVD | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hreceipt
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| CVSS vector cvss_vector | Red Hat | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hreceipt
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} | — | ||||
| CWE cwe | NVD | CWE-674receipt
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} | — | ||||
| CWE cwe | Red Hat | CWE-674receipt
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"severity": "moderate"
} | — | ||||
| Exploitation exploitation | NVD | none No evidence of exploitation, and no public proof of concept. receipt
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} | — | ||||
| Packages packages | Red Hat | p11-kit-0:0.26.4-1.el9_8, p11-kit-main-0.26.4-1.hum1, cert-manager/jetstack-cert-manager-acmesolver-rhel9:1790589998, cert-manager/jetstack-cert-manager-rhel9:1790223279, discovery/discovery-server-rhel9:1786638573, discovery/discovery-ui-rhel9:1786634825, rhui5/installer-tp-rhel9:1787135742, rhui5/cds-rhel9:1786533457, p11-kit-0:0.26.4-1.el10_2, rhui5/haproxy-rhel9:1786533449, cert-manager/cert-manager-istio-csr-rhel9:1790223719, cert-manager/cert-manager-operator-rhel9:1790272426, p11-kit-main-0.26.2-1.2.hum1, rhui5/installer-rhel9:1786435483, cert-manager/cert-manager-istio-csr-rhel9:1790589914, rhui5/rhua-tp-rhel9:1787241260, cert-manager/cert-manager-operator-rhel9:1790589855, cert-manager/cert-manager-trust-manager-rhel9:1790598593, cert-manager/jetstack-cert-manager-rhel9:1790589912, rhui5/cds-kubernetes-tp-rhel9:1787241211, rhui5/rhua-rhel9:1786533529, insights-proxy/insights-proxy-container-rhel9:1786433656, rhui5/cds-kubernetes-rhel9:1786435241receipt
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"severity": "moderate"
} | — | ||||
| Product product | NVD | Red Hat Enterprise Linux 10receipt
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} | — | ||||
| Severity severity | NVD | MEDIUM From 4.0 to 6.9. receipt
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| Severity severity | Red Hat | moderate A flaw that is harder to exploit, or whose impact is limited. receipt
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| Status status | NVD | Modifiedreceipt
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| Technical impact technical_impact | NVD | partial The attacker gains limited control, or limited information. receipt
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| Vendor vendor | NVD | Red Hatreceipt
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Every claim, by kind
vulnerability
| p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing zetlyn/cve-redhat · 2026-06-23 | cvss 6.2 cvss_vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H cwe CWE-674 packages p11-kit-0:0.26.4-1.el9_8, p11-kit-main-0.26.4-1.hum1, cert-manager/jetstack-cert-manager-acmesolver-rhel9:1790589998, cert-manager/jetstack-cert-manager-rhel9:1790223279, discovery/discovery-server-rhel9:1786638573, discovery/discovery-ui-rhel9:1786634825, rhui5/installer-tp-rhel9:1787135742, rhui5/cds-rhel9:1786533457, p11-kit-0:0.26.4-1.el10_2, rhui5/haproxy-rhel9:1786533449, cert-manager/cert-manager-istio-csr-rhel9:1790223719, cert-manager/cert-manager-operator-rhel9:1790272426, p11-kit-main-0.26.2-1.2.hum1, rhui5/installer-rhel9:1786435483, cert-manager/cert-manager-istio-csr-rhel9:1790589914, rhui5/rhua-tp-rhel9:1787241260, cert-manager/cert-manager-operator-rhel9:1790589855, cert-manager/cert-manager-trust-manager-rhel9:1790598593, cert-manager/jetstack-cert-manager-rhel9:1790589912, rhui5/cds-kubernetes-tp-rhel9:1787241211, rhui5/rhua-rhel9:1786533529, insights-proxy/insights-proxy-container-rhel9:1786433656, rhui5/cds-kubernetes-rhel9:1786435241 severity moderate | source |
| 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. zetlyn/cve-nvd · 2026-06-29 | automatable no cvss 6.2 cvss_vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H cwe CWE-674 exploitation none product Red Hat Enterprise Linux 10 severity MEDIUM status Modified technical_impact partial vendor Red Hat | source |