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CVE-2025-61664
4.9 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): LOCAL
- Attack complexity (AC): HIGH
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): LOW
- Integrity impact (I): LOW
- Availability impact (A): LOW
Grub2: missing unregister call for normal_exit command may lead to use-after-free
A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normal_exit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after the module has been removed, causing the system to improperly access a previously freed memory location. This leads to a system crash or possible impacts in data confidentiality and integrity.
References
Affected products
grub2
- =<2.14
rhcos
Matching in nixpkgs
pkgs.grub2_pvgrub_image
PvGrub2 image for booting PV Xen guests
pkgs.grub2_pvhgrub_image
PvGrub2 image for booting PVH Xen guests
Package maintainers
-
@hehongbo Hongbo
-
@CertainLach Yaroslav Bolyukin <iam@lach.pw>
-
@SigmaSquadron Fernando Rodrigues <alpha@sigmasquadron.net>