Description
A flaw was found in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered it was unloaded, leading to a use-after-free vulnerability. If correctly exploited, this vulnerability may result in arbitrary code execution, eventually allowing the attacker to bypass 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