Bug 2273912 (CVE-2024-2312)

Summary:	CVE-2024-2312 grub2: grub-efi crashes upon `exit`
Product:	[Other] Security Response	Reporter:	Avinash Hanwate <ahanwate>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	gsuckevi
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in GRUB2. GRUB2 do not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving the UEFI system table hooks after exit. This issue leads to a use-after-free condition, possibly leading to a secure boot bypass.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2273913, 2273914, 2273915
Bug Blocks:	2273916

Description Avinash Hanwate 2024-04-08 05:16:49 UTC

GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks after exit. This lead to a use-after-free condition, and could possibly lead to secure boot bypass.

https://bugs.launchpad.net/ubuntu/+source/grub2-unsigned/+bug/2054127
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-2312

Comment 1 Avinash Hanwate 2024-04-08 05:18:33 UTC

Created grub2 tracking bugs for this issue:

Affects: fedora-all [bug 2273914]


Created radare2 tracking bugs for this issue:

Affects: epel-all [bug 2273913]
Affects: fedora-all [bug 2273915]