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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.

PUBLISHED Reserved 2026-06-29 | Published 2026-06-29 | Updated 2026-07-10 | Assigner redhat




MEDIUM: 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Uncontrolled Recursion

Product status

Default status
affected

0.26.2-1.2.hum1 (rpm) before *
unaffected

Default status
affected

Default status
affected

Default status
affected

Default status
affected

Default status
affected

Default status
affected

Timeline

2026-06-23:Reported to Red Hat.
2026-06-23:Made public.

References

access.redhat.com/errata/RHSA-2026:37469 (RHSA-2026:37469) vendor-advisory

access.redhat.com/security/cve/CVE-2026-13757 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2494556 (RHBZ#2494556) issue-tracking

cve.org (CVE-2026-13757)

nvd.nist.gov (CVE-2026-13757)

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