CVE-2022-23219Public exploit

Process crash or code execution via pathname copy

Published Jan 14, 2022 · Updated May 5, 2025

Stack-based buffer overflow in GNU C Library through 2.34 allows attackers to crash processes or execute code via an overlong UNIX pathname. In sunrpc/clnt_gen.c, clnt_create uses strcpy to place the caller-supplied hostname into the fixed-size sun_path field without checking its length. The calling application must pass an attacker-controlled pathname with the unix protocol; stack protection bounds the consequence to a process crash, while unprotected builds permit code execution.

CVSS severity9.8
Critical
EPSS probability4.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in GNU C Library through 2.34 allows attackers to crash processes or execute code via an overlong UNIX pathname. In sunrpc/clnt_gen.c, clnt_create uses strcpy to place the caller-supplied hostname into the fixed-size sun_path field without checking its length. The calling application must pass an attacker-controlled pathname with the unix protocol; stack protection bounds the consequence to a process crash, while unprotected builds permit code execution.

The record

CVE
CVE-2022-23219
Published
Jan 14, 2022
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 14, 2022CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8Canonical UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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