Description
When reading the language .mo file in grub_mofile_open(), grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted .mo file may lead the buffer size calculation to overflow, leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data or overwrite critical data, possibly circumventing 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: unaffected
Red Hat Red Hat Enterprise Linux 8
Default version status: unaffected
Red Hat Red Hat OpenShift Container Platform 4
Default version status: affected