Bug 2284529 (CVE-2024-36912)

Summary:	CVE-2024-36912 kernel: Drivers: hv: vmbus: Track decrypted status in vmbus_gpadl
Product:	[Other] Security Response	Reporter:	Rohit Keshri <rkeshri>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, hodgelewis163, jarod, jburrell, jdenham, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, scweaver, sidakwo, sukulkar, tglozar, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.1.91, kernel 6.6.31, kernel 6.8.10, kernel 6.9	Doc Type:	If docs needed, set a value
Doc Text:		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:	2284530
Bug Blocks:	2284619

Description Rohit Keshri 2024-06-03 12:53:03 UTC

In the Linux kernel, the following vulnerability has been resolved:

Drivers: hv: vmbus: Track decrypted status in vmbus_gpadl

The Linux kernel CVE team has assigned CVE-2024-36912 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024053038-CVE-2024-36912-b637@gregkh/T

Comment 1 Rohit Keshri 2024-06-03 12:53:47 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2284530]

Comment 2 Alex 2024-06-09 17:47:26 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-36912 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags LEAK  ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.

Comment 6 Duane Saunders 2026-01-20 07:51:53 UTC

This fix addresses a subtle but important issue in the Hyper-V vmbus driver. By properly tracking the decrypted state in vmbus_gpadl, the kernel avoids inconsistent memory handling and potential security risks when working with shared guest/host memory. Assigning CVE-2024-36912 highlights the security impact, and applying the upstream patch is important for Linux systems running on Hyper-V, especially in virtualized and cloud environments. https://basketballstars2026.io