Bug 2275735 (CVE-2024-26858)

Summary:	CVE-2024-26858 kernel: net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map
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, mcascell, 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 6.6.22, kernel 6.7.10, kernel 6.8	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the mlx5e_txwqe_complete() function in the Linux kernel. The CPU or compiler may reorder two of the functions: mlx5e_ptp_metadata_map_put() and mlx5e_ptpsq_track_metadata(), and a situation could arise where metadata tracking occurs before the metadata map is fully populated. This could lead to a NULL pointer dereference which can cause 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:	2275736
Bug Blocks:	2275739

Description Robb Gatica 2024-04-17 18:56:22 UTC

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

net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map

The Linux kernel CVE team has assigned CVE-2024-26858 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024041725-CVE-2024-26858-34fb@gregkh/T

Comment 1 Robb Gatica 2024-04-17 18:56:56 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2275736]

Comment 5 Alex 2024-06-09 15:09:22 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26858 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags REMOTE NULLPTR SIMPLEFIX 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 10 errata-xmlrpc 2024-07-17 00:48:49 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:4583 https://access.redhat.com/errata/RHSA-2024:4583