CVE-2026-13757

Publication date 29 June 2026

Last updated 27 August 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.2 · Medium

Score breakdown

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.

Status

Package Ubuntu Release Status
p11-kit 26.04 LTS resolute
Vulnerable
25.10 questing Ignored end of life, was deferred [2026-06-30]
24.04 LTS noble
Fixed 0.25.3-4ubuntu2.2
22.04 LTS jammy
Fixed 0.24.0-6ubuntu0.1
20.04 LTS focal
Fixed 0.23.20-1ubuntu0.1+esm1
18.04 LTS bionic
Fixed 0.23.9-2ubuntu0.1+esm1
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
p11-kit

Severity score breakdown

CVSS version: CVSS v3.0

Base score 6.2 · Medium

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

References

Related Ubuntu Security Notices (USN)

    • USN-8687-1
    • p11-kit vulnerabilities
    • 27 August 2026

Other references

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