There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-4735-1 grub2 security update
EUVD EUVD EUVD-2020-6463 There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
Ubuntu USN Ubuntu USN USN-4432-1 GRUB 2 vulnerabilities
Fixes

Solution

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Workaround

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-04T12:39:36.229Z

Reserved: 2020-06-17T00:00:00

Link: CVE-2020-14311

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-07-31T22:15:11.597

Modified: 2024-11-21T05:02:58.923

Link: CVE-2020-14311

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-07-29T17:00:00Z

Links: CVE-2020-14311 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses