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  4. CVE 2023 4813 glibc potential use after free in gaihinet
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Back to active CVEs
Medium · CVSS 5.9CVE-2023-4813

Glibc: potential use-after-free in gaih_inet()CVE-2023-4813

Answer in brief

CVE-2023-4813 records a Medium severity (CVSS 5.9) vulnerability in Glibc: potential use-after-free in gaih_inet(). The current sources do not mark it as known exploited. The current feed maps Red Hat/compat-glibc (generic), Red Hat/glibc (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

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

Published Sep 12, 2023Updated Oct 14, 2026Source checked Oct 14, 2026First seen by HOL Oct 14, 2026Material review Oct 14, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.9
Exploitation
Not marked as known exploited
Affected software
5 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 5.9. 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 Red Hat/compat-glibc (generic), Red Hat/glibc (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/compat-glibcgeneric*Not reported
Red Hat/glibcgeneric*Not reported
Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5
Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5
Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/compat-glibc, Red Hat/glibc, Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP.
  2. 2Review the reported fix. Source-reported workaround: Removing the "SUCCESS=continue" or "SUCCESS=merge" configuration from the hosts database in /etc/nsswitch.conf will mitigate this vulnerability. Note that, these options are not supported by the hosts database, if they were working before it was because of this bug.

Evidence timeline and material changes

  1. Published upstream

    Sep 12, 2023

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

  2. Source modified

    Oct 14, 2026

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

  3. First seen by HOL

    Oct 14, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
  • Source referencecert-portal.siemens.com
  • Source referencesecurity.netapp.com
  • Source referenceopenwall.com
Upstream source description

A flaw has been identified in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

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  • Password Reset Code Accessible in User Listing APISame generic ecosystem
  • Praat Model Loader whisper.cpp whisper_model_load out-of-bounds writeSame generic ecosystem
  • qs.stringify with arrayFormat comma throws TypeError on array elements that cannot be coerced to a stringSame generic ecosystem
  • FreeRDP 3.0.0 before 3.32.0 Null Pointer Dereference via rdpsnd FragmentSame generic ecosystem

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-416
Source
CVE List V5
Source checked
Oct 14, 2026
References
9 linked sources
Open source record