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CVE-2021-3697

HIGH CVSS: 7.0 Published: 2022-07-06 Modified: 2026-06-17

Description

A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

Affected Platforms

Redhat Developer ToolsRedhat OpenshiftRedhat Enterprise Linux Server TusRedhat Enterprise LinuxRedhat Enterprise Linux EusGnu Grub2Redhat Enterprise Linux For Power Little EndianRedhat Openshift Container PlatformRedhat Enterprise Linux Server AusRedhat Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions

Weakness Type

CWE-787, CWE-787

References