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Gentoo Linux: CVE-2020-14309: GRUB: Multiple vulnerabilities

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Gentoo Linux: CVE-2020-14309: GRUB: Multiple vulnerabilities

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
07/30/2020
Created
05/04/2021
Added
05/03/2021
Modified
05/03/2021

Description

There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.

Solution(s)

  • gentoo-linux-upgrade-sys-devel-grub

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