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CVE-2022-23218 GNU glibc

Affected softwareGNU glibc
Severity9.8 Critical CVSS 3.1 3 scores
WeaknessCWE-120
Published14 Jan 2022
Updated14 Oct 2026

Description

The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its path argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution.

Exploitation status

Proof of concept only

A proof of concept exists, but no reviewed exploit catalogue lists this CVE.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: poc CISA recorded that an exploit has been demonstrated. Automatable: yes, technical impact: total.
  • Indexed PoC none indexed
  • EPSS 5.7% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

9.8 CRITICAL v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 3 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H NVD Primary published
CVSS 3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CISA-ADP Secondary
CVSS 2.0 7.5 none AV:N/AC:L/Au:N/C:P/I:P/A:P NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2022 ↗ CPU 2022-Q4 Oracle Communications / Signaling (glibc) (22.1.1)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Communications Signaling (glibc) 22.1.1 22.1.1

Products and versions

4 products, 6 version entries
SourceVendorProductSchemeAffected versions
nvd debian debian linux generic 10.0
nvd gnu glibc generic < 2.31
nvd oracle communications cloud native core unified data repository generic 22.2.0
nvd oracle enterprise operations monitor generic 4.3 · 4.4 · 5.0

References

URLTags
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202208-24 Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=28768 Exploit, Issue Tracking, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-099606.html
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-831302.html

Timeline

Published2022-01-14By the CVE Program.
NVD record modified2026-10-14NVD's own last-modified date for this record.