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The iconv function in the GNU C Library (aka glibc or...

High severity Unreviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Jun 9, 2025

Package

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Affected versions

Unknown

Patched versions

Unknown

Description

The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when converting UCS4 text containing an irreversible character, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.

References

Published by the National Vulnerability Database Dec 4, 2020
Published to the GitHub Advisory Database May 24, 2022
Last updated Jun 9, 2025

Severity

High

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(18th percentile)

Weaknesses

CVE ID

CVE-2020-29562

GHSA ID

GHSA-9xm7-qxg2-g5p4

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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