Bug 2220893 (CVE-2023-31248, ZDI-CAN-20717)

Summary:	CVE-2023-31248 kernel: nf_tables: use-after-free in nft_chain_lookup_byid()
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	acaringi, allarkin, bhu, chwhite, crwood, dbohanno, ddepaula, debarbos, dfreiber, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jpoimboe, jshortt, jstancek, jwyatt, kcarcia, kernel-mgr, kpatch-maint-bot, ldoskova, lgoncalv, lzampier, nmurray, ptalbert, qzhao, rhandlin, rogbas, rrobaina, rvrbovsk, rysulliv, scweaver, tglozar, tyberry, vkumar, walters, wcosta, williams, wmealing, ycote, ymankad
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A use-after-free flaw was found in the Linux kernel's Netfilter module in net/netfilter/nf_tables_api.c in nft_chain_lookup_byid. This flaw allows a local attacker to cause a local privilege escalation issue due to a missing cleanup.	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:	2221048, 2221049, 2221778, 2221779, 2221780, 2221781, 2221782, 2221783, 2221784, 2221785, 2221786
Bug Blocks:	2220897

Description TEJ RATHI 2023-07-06 13:01:35 UTC

Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace

https://lore.kernel.org/netfilter-devel/20230705121627.GC19489@breakpoint.cc/T/
https://www.openwall.com/lists/oss-security/2023/07/05/2
http://www.openwall.com/lists/oss-security/2023/07/05/2

Comment 5 Rohit Keshri 2023-07-10 18:32:27 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2221778]

Comment 12 errata-xmlrpc 2023-09-12 09:50:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:5091 https://access.redhat.com/errata/RHSA-2023:5091

Comment 13 errata-xmlrpc 2023-09-12 09:52:16 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:5093 https://access.redhat.com/errata/RHSA-2023:5093

Comment 14 errata-xmlrpc 2023-09-12 10:14:11 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:5069 https://access.redhat.com/errata/RHSA-2023:5069

Comment 15 errata-xmlrpc 2023-10-10 10:13:31 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2023:5575 https://access.redhat.com/errata/RHSA-2023:5575

Comment 16 errata-xmlrpc 2023-10-10 15:25:08 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2023:5603 https://access.redhat.com/errata/RHSA-2023:5603

Comment 17 errata-xmlrpc 2023-10-10 15:33:13 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2023:5604 https://access.redhat.com/errata/RHSA-2023:5604