CVE-2020-14309
MEDIUM6.7EPSS 0.04%Published: 7/30/2020Modified: 12/3/2025
Also known as:ALPINE-CVE-2020-14309DEBIAN-CVE-2020-14309
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.
Affected packages (2)
- Alpine/grubfrom 0, < 2.06-r0
- Debian/grub2from 0, < 2.04-9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |