Public vulnerability disclosure

CVE-2023-5156

Glibc: dos due to memory leak in getaddrinfo.c

publishedCWE-401

A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a memory leak, which may result in an application crash.

Technical severity7.5 highCVSS 3.1 · CNA: redhat
Published2023-09-25Source updated 2026-11-07
Collected2026-11-072 attributed sources

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
Red Hat Enterprise Linux 6
Red Hat
compat-glibc
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unknown
CNA: redhat
Red Hat Enterprise Linux 6
Red Hat
glibc
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unknown
CNA: redhat
Red Hat Enterprise Linux 7
Red Hat
compat-glibc
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unknown
CNA: redhat
Red Hat Enterprise Linux 7
Red Hat
glibc
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unknown
CNA: redhat
Red Hat Enterprise Linux 8
Red Hat
glibc
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unaffected
CNA: redhat
Red Hat Enterprise Linux 9
Red Hat
glibc
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unaffected
CNA: redhat
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
Siemens
≥ V3.1.0; < V3.1.5 (affected, custom)
Other versions: unknown
ADP: siemens-SADP
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Siemens
≥ V3.1.0; < V3.1.5 (affected, custom)
Other versions: unknown
ADP: siemens-SADP
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Siemens
≥ V3.1.0; < V3.1.5 (affected, custom)
Other versions: unknown
ADP: siemens-SADP

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
3.1 / 7.5
high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCNA: redhat

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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