CVE Database›Document archive›CVE-2021-29390

CVE-2021-29390

libjpeg-turbo: heap-buffer-overflow vulnerability in decompress_smooth_data in jdcoefct.c

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Severity

Moderate

Red Hat Product Security

7.1

CVSS 3.1

Review impact separately from score.

Published · August 22, 2023

Updated · November 21, 2025

Description

A heap buffer over-read flaw was found in libjpeg-turbo. For certain types of smoothed jpeg images, the decompress_smooth_data() function may improperly enter a condition statement that leads to heap memory read of uninitialized data, which may cause an application crash or loss of confidentiality.

Statement

The amount of memory read is very small and not controllable by an attacker, which lowers the impact of this flaw to Moderate.

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 · 7.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

CWE-125 · Out-of-bounds Read