Bug 2281879 (CVE-2024-35978)

Summary:	CVE-2024-35978 kernel: Bluetooth: Fix memory leak in hci_req_sync_complete()
Product:	[Other] Security Response	Reporter:	Robb Gatica <rgatica>
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 4.19.313, kernel 5.4.275, kernel 5.10.216, kernel 5.15.156, kernel 6.1.87, kernel 6.6.28, kernel 6.8.7, kernel 6.9	Doc Type:	If docs needed, set a value
Doc Text:	This CVE identifies a memory leak in the Linux kernel's Bluetooth subsystem, specifically within the hci_req_sync_complete() function. The issue arises because the function fails to release the previous synchronization request state before assigning a new one, leading to increased memory usage over time. This flaw can degrade system performance and potentially cause a denial of service.	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:	2281880
Bug Blocks:	2282028

Description Robb Gatica 2024-05-20 16:19:33 UTC

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

Bluetooth: Fix memory leak in hci_req_sync_complete()

The Linux kernel CVE team has assigned CVE-2024-35978 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052025-CVE-2024-35978-adaa@gregkh/T

Comment 1 Robb Gatica 2024-05-20 16:20:15 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2281880]

Comment 5 Alex 2024-06-09 15:42:04 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-35978 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags REMOTE SIMPLEFIX LEAK NETWORK 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.

Comment 17 errata-xmlrpc 2025-05-13 08:27:30 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6966 https://access.redhat.com/errata/RHSA-2025:6966