CVE Database›CVE-2020-29562

CVE-2020-29562

glibc: assertion failure in iconv when converting invalid UCS4

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Severity

Moderate

Red Hat Product Security

4.8

CVSS 3.1

Review impact separately from score.

Published · November 19, 2020

Updated · June 27, 2026

Description

A denial of service flaw was found in the way glibc's iconv function handled UCS4 text containing an irreversible character. This flaw causes an application compiled with glibc and using the vulnerable function to terminate with an assertion, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.8
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

CWE-617 · Reachable Assertion