Bug 2226788 (CVE-2023-39194, ZDI-CAN-18111)

Summary:	CVE-2023-39194 kernel: xfrm: out-of-bounds read in __xfrm_state_filter_match()
Product:	[Other] Security Response	Reporter:	Mauro Matteo Cascella <mcascell>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, allarkin, bhu, chwhite, crwood, cye, dbohanno, ddepaula, debarbos, dfreiber, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, nmurray, ptalbert, qzhao, rogbas, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, security-response-team, tglozar, tyberry, vkumar, walters, wcosta, williams, wmealing, ycote, ykopkova, ymankad, zhijwang
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.5-rc7	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the XFRM subsystem in the Linux kernel. The specific flaw exists within the processing of state filters, which can result in a read past the end of an allocated buffer. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, potentially leading to an information disclosure.	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:	2227302, 2227303, 2227304, 2227305, 2242892
Bug Blocks:	2225771

Description Mauro Matteo Cascella 2023-07-26 14:29:19 UTC

An out-of-bounds read issue was found in the __xfrm_state_filter_match() function within the XFRM subsystem of the Linux kernel. This flaw requires CAP_NET_ADMIN to be exploited and could lead to information disclosure.

Comment 6 Mauro Matteo Cascella 2023-10-09 07:36:29 UTC

ZDI security advisory:
https://www.zerodayinitiative.com/advisories/ZDI-CAN-18111/

Upstream fix:
https://github.com/torvalds/linux/commit/dfa73c17d55b921e1d4e154976de35317e43a93a

Comment 7 Mauro Matteo Cascella 2023-10-09 15:45:59 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2242892]

Comment 8 Justin M. Forbes 2023-10-12 16:39:04 UTC

This was fixed for Fedora with the 6.4.12 stable kernels

Comment 9 errata-xmlrpc 2024-04-30 10:11:17 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 errata-xmlrpc 2024-05-22 09:14:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:2950 https://access.redhat.com/errata/RHSA-2024:2950

Comment 11 errata-xmlrpc 2024-05-22 09:51:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:3138 https://access.redhat.com/errata/RHSA-2024:3138