Vulnerability · Published Apr 5, 2024 · Assigned by canonical
CVE-2024-2312
Medium 6.7
In plain English
A medium-severity use-after-free in Debian based GNU GRUB from Debian. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.7Medium
Exploit odds (30 days)0.4%top 68.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks after exit. This lead to a use-after-free condition, and could possibly lead to secure boot bypass.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | grub2 | 2.12-2 | DEBIAN-CVE-2024-2312 |
| Debian:14 | grub2 | 2.12-2 | DEBIAN-CVE-2024-2312 |
| Ubuntu:24.04:LTS | grub2-signed | 1.202 | UBUNTU-CVE-2024-2312 |
| Ubuntu:24.04:LTS | grub2-unsigned | 2.12-1ubuntu7 | UBUNTU-CVE-2024-2312 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Debian | Debian based GNU GRUB | 0 – before 2.12-1ubuntu5 |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H