Bug 2273252 (CVE-2024-26731)

Summary:	CVE-2024-26731 kernel: bpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()
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 6.1.80, kernel 6.6.19, kernel 6.7.7, kernel 6.8	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the Linux kernel, where a race condition is present between the sk_psock_verdict_data_ready() and sk_psock_stop_verdict() functions. If the functions are called concurrently, the psock (packet socket) object which both access could be NULL, causing a NULL pointer dereference, leading to memory corruption or crashes.	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:	2273253
Bug Blocks:	2273246

Description Robb Gatica 2024-04-04 01:16:31 UTC

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

bpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()

The Linux kernel CVE team has assigned CVE-2024-26731 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024040358-CVE-2024-26731-e084@gregkh/T

Comment 1 Robb Gatica 2024-04-04 01:17:06 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2273253]

Comment 2 Alex 2024-06-09 13:02:20 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26731 is: 	SKIP	The Fixes patch not applied yet, so unlikely that actual: 6df7f764cd3cf5a03a4a47b23be47e57e41fcd85	YES			NO	NO	unknown (where first YES/NO value means if related sources built).