CVE-2020-29562

low

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

2.5

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-29562

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-29562.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202102-16

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202102-17

OS impact

OS	Version	Status	Fixed in
arch		fixed	`2.33-1`
sles		affected
debian	bookworm	fixed	`2.31-7`
debian	bullseye	fixed	`2.31-7`
debian	forky	fixed	`2.31-7`
debian	sid	fixed	`2.31-7`
debian	trixie	fixed	`2.31-7`

References

Verify integrity in audit chain (admin only). AS-IS.