Integer Overflow or Wraparound Affecting grub2 package, versions <2.04-9


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (21st percentile)

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  • Snyk IDSNYK-DEBIAN13-GRUB2-5681752
  • published29 Jul 2020
  • disclosed31 Jul 2020

Introduced: 29 Jul 2020

CVE-2020-14311  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Debian:13 grub2 to version 2.04-9 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2 package and not the grub2 package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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.

CVSS Scores

version 3.1