Bug 2281632 (CVE-2024-35914)

Summary:	CVE-2024-35914 kernel: nfsd: Fix error cleanup path in nfsd_rename()
Product:	[Other] Security Response	Reporter:	ybuenos
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, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, ldoskova, lgoncalv, mleitner, mmilgram, mstowell, nmurray, ptalbert, rhel-process-autobot, rparrazo, rrobaina, rvrbovsk, scweaver, sidakwo, sukulkar, tglozar, vkumar, watson-tool-maintainers, wcosta, williams, wmealing, ycote, ykopkova
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.8.5, kernel 6.9	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel's nfsd component. An error in the cleanup path of the `nfsd_rename()` function fails to properly drop remount protection. This oversight could allow a local or remote attacker to trigger a denial of service (DoS) condition, making the system or service unavailable.	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:	2281633
Bug Blocks:	2281743

Description ybuenos 2024-05-20 10:19:25 UTC

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

nfsd: Fix error cleanup path in nfsd_rename()

The Linux kernel CVE team has assigned CVE-2024-35914 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024051957-CVE-2024-35914-3194@gregkh/T

Comment 1 ybuenos 2024-05-20 10:20:08 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2281633]

Comment 2 Alex 2024-06-09 15:35:49 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-35914 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags DEADLOCK DISK SIMPLEFIX IMPROVEONLY  ; 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.