A flaw was found in grub2. When reading a symbolic link's name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent secure boot protections.
This Cyber News was published on www.tenable.com. Publication date: Wed, 19 Feb 2025 22:56:02 +0000