ID:8155 - Exploit for Use-after-free in grub - CVE-2020-25632
Published: July 20, 2022
Vulnerability identifier: #VU51188
Vulnerability risk: Low
CVE-ID: CVE-2020-25632
CWE-ID: CWE-416
Exploitation vector: Local access
Vulnerable software:
grub
grub
Link to public exploit:
Vulnerability description
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a use-after-free error when handling module unloads. A local privileged user can unload a kernel module, trigger a use-after-free error and bypass Secure Boot protection mechanism.
Remediation
Install updates from vendor's repository.