CVE-2026-13757

MEDIUM 6.2

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

CVSS Score

6.2

EPSS Score

0.1%

EPSS Percentile

4th

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.

CWE	CWE-674
Vendor	red hat
Product	red hat enterprise linux 10
Published	Jun 29, 2026
Last Updated	Aug 13, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Discovery 2

All versions affected

Red Hat / Red Hat Discovery 2

All versions affected

Red Hat / Red Hat Hardened Images

All versions affected

Red Hat / Red Hat Hardened Images

All versions affected

Red Hat / Red Hat Insights proxy 1.5

All versions affected