CVE-2026-13757: Uncontrolled Recursion in Red Hat Red Hat Enterprise Linux 10
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.
AI Analysis
Technical Summary
The vulnerability exists in p11-kit where the functions p11_rpc_message_get_attribute() and p11_rpc_message_get_attribute_array_value() call each other recursively without a limit on recursion depth 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 exploit this by sending a specially crafted request with deeply nested template attributes, leading to stack exhaustion and crashing the p11-kit server and its dependent services. Red Hat has issued security advisories and updated packages (p11-kit 0.26.4-1.hum1) to fix this issue.
Potential Impact
The vulnerability allows an unauthenticated local attacker to cause a denial of service by crashing the p11-kit server process through stack exhaustion. This impacts availability of the p11-kit service and any dependent services relying on it. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Red Hat has released fixed packages for p11-kit version 0.26.4-1.hum1 that address CVE-2026-13757. Users should apply these updates to remediate the vulnerability. Patch status is confirmed by Red Hat advisories RHSA-2026:37469 and RHSA-2026:38342. No other mitigation or workaround is indicated.
CVE-2026-13757: Uncontrolled Recursion in Red Hat Red Hat Enterprise Linux 10
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.
CVSS v3.1
Score 6.2medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability exists in p11-kit where the functions p11_rpc_message_get_attribute() and p11_rpc_message_get_attribute_array_value() call each other recursively without a limit on recursion depth 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 exploit this by sending a specially crafted request with deeply nested template attributes, leading to stack exhaustion and crashing the p11-kit server and its dependent services. Red Hat has issued security advisories and updated packages (p11-kit 0.26.4-1.hum1) to fix this issue.
Potential Impact
The vulnerability allows an unauthenticated local attacker to cause a denial of service by crashing the p11-kit server process through stack exhaustion. This impacts availability of the p11-kit service and any dependent services relying on it. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Red Hat has released fixed packages for p11-kit version 0.26.4-1.hum1 that address CVE-2026-13757. Users should apply these updates to remediate the vulnerability. Patch status is confirmed by Red Hat advisories RHSA-2026:37469 and RHSA-2026:38342. No other mitigation or workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-06-29T17:43:59.500Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-13757","vendor":"Red Hat"}]
Threat ID: 6a42c23927e9c79719595bfa
Added to database: 06/29/2026, 19:06:33 UTC
Last enriched: 08/11/2026, 13:28:22 UTC
Last updated: 08/13/2026, 13:36:05 UTC
Views: 147
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