Bug 2281249 (CVE-2024-35856)

Summary:	CVE-2024-35856 kernel: Bluetooth: btusb: mediatek: Fix double free of skb in coredump
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, sidakwo, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.6.30, kernel 6.8.9, kernel 6.9	Doc Type:	If docs needed, set a value
Doc Text:	A double-free vulnerability was found in the Linux kernel's MediaTek Bluetooth USB driver (`btusb`). This issue occurs when the same socket buffer (`skb`) is freed twice during a coredump operation, potentially leading to memory corruption or system instability.	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:	2281250
Bug Blocks:	2281767

Description Zack Miele 2024-05-18 00:15:43 UTC

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

Bluetooth: btusb: mediatek: Fix double free of skb in coredump

The Linux kernel CVE team has assigned CVE-2024-35856 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024051741-CVE-2024-35856-a7ed@gregkh/T

Comment 1 Zack Miele 2024-05-18 00:16:20 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2281250]

Comment 2 Alex 2024-06-09 15:33:58 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-35856 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags DANGER SIMPLEFIX SKB  ; these flags parsed automatically based on patche 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.