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Back to active CVEs
Medium · CVSS 5.5CVE-2023-43786

Libx11: stack exhaustion from infinite recursion in putsubimage()CVE-2023-43786

Answer in brief

CVE-2023-43786 records a Medium severity (CVSS 5.5) vulnerability in Libx11: stack exhaustion from infinite recursion in putsubimage(). The current sources do not mark it as known exploited. The current feed maps libXpm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 10, 2023Updated Nov 7, 2026Source checked Nov 7, 2026First seen by HOL Nov 7, 2026Material review Nov 7, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-400
Source
CVE List V5
Source checked
Nov 7, 2026
References
8 linked sources
Open source record

Key facts

Risk
Medium · CVSS 5.5
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps libXpm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
libXpmgeneric>=0 <3.5.173.5.17

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for libXpm.
  2. 2Review the reported fix. Update libXpm to 3.5.17 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 10, 2023

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 7, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 7, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
  • Source referencelists.debian.org
  • Source referencelists.fedoraproject.org
  • Source referencesecurity.netapp.com
  • Source referenceopenwall.com
Upstream source description

A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.

Quoted source text, attributed separately from HOL analysis.