Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
grub2
Default version status: unaffected
0 to ≤ 2.12affected
Red Hat Red Hat Enterprise Linux 10
Default version status: affected
1:2.12-15.el10_0 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
1:2.06-104.el9_6 to < *unaffected
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
Red Hat Red Hat Enterprise Linux 8
Default version status: unknown
Red Hat Red Hat OpenShift Container Platform 4
Default version status: affected