CVE-2020-14311
6.0
MEDIUM
CVSS 3.1
EPSS 0.03%
Description
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.
How to fix CVE-2020-14311
To remediate CVE-2020-14311, upgrade the affected package to a fixed version below.
- Alpine/grub—upgrade to 2.06-r0 or later
- —upgrade to 2.04-9 or later
Is CVE-2020-14311 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.06-r0
- from 0, < 2.04-9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |