CVE-2026-13757

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

CVSS 3.1 6.2 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-13757

Published

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.

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Affected versions, risk and source history

Exploitation and risk

Source status

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Advisory history

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6 Nov 2026 08:36:20 UTC