Bug 2265517 (CVE-2024-26585)

Summary:	CVE-2024-26585 kernel: tls: race between tx work scheduling and socket close
Product:	[Other] Security Response	Reporter:	Patrick Del Bello <pdelbell>
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, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, kyoshida, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, 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 6.8-rc5	Doc Type:	If docs needed, set a value
Doc Text:	A race condition vulnerability was found in the tls subsystem of the Linux kernel. The submitting thread (recvmsg/sendmsg) may exit as soon as the async crypto handler calls complete(), which could lead to undefined behavior and 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:	2265521
Bug Blocks:	2265516

Description Patrick Del Bello 2024-02-22 14:28:37 UTC

Similarly to previous commit, the submitting thread (recvmsg/sendmsg) may exit as soon as the async crypto handler calls complete().
Reorder scheduling the work before calling complete(). This seems more logical in the first place, as it's the inverse order of what the submitting thread will do.

Comment 1 Mauro Matteo Cascella 2024-02-22 14:42:33 UTC

Kernel security advisory:
https://lore.kernel.org/linux-cve-announce/2024022150-fancy-numerate-94ab@gregkh/T/#u

Upstream fix:
https://github.com/torvalds/linux/commit/e01e3934a1b2

Comment 2 Mauro Matteo Cascella 2024-02-22 14:45:34 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2265521]

Comment 9 errata-xmlrpc 2024-04-30 10:15:38 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2394 https://access.redhat.com/errata/RHSA-2024:2394

Comment 10 Alex 2024-06-09 15:12:34 UTC

The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26585 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags REMOTE SIMPLEFIX RACE  ; 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.