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Vulnerability record · public intelligence
CVE-2026-13757
MEDIUM

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

Published Jun 29, 2026 · Updated Nov 3, 2026

Severity · CVSSMEDIUM · Not scored
Known exploitationNot listed
EPSS / likelihood0.15%
QFinch risk scoreNot available

Original summary

Normalized public record · Updated Nov 3, 2026

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

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

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.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

FIRST-EPSSCVE-LIST-V5
SSVC priority
LOW
Confidence
Not available
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. RHSA-2026:37469 ↗
  2. RHSA-2026:38342 ↗
  3. RHSA-2026:49667 ↗
  4. RHSA-2026:49668 ↗
  5. RHSA-2026:53371 ↗
  6. RHSA-2026:54387 ↗
  7. RHSA-2026:54760 ↗
  8. RHSA-2026:58981 ↗
  9. RHSA-2026:72394 ↗
  10. RHSA-2026:72395 ↗
  11. RHSA-2026:72399 ↗
  12. RHSA-2026:72470 ↗

Record history

Published Jun 29, 2026 · Last refreshed Nov 3, 2026

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