Bug 2218672 (CVE-2023-3090)

Summary:	CVE-2023-3090 kernel: ipvlan: out-of-bounds write caused by unclear skb->cb
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	acaringi, allarkin, bhu, chwhite, 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, ldoskova, lgoncalv, lleshchi, lzampier, nmurray, ptalbert, qzhao, rhandlin, rogbas, rrobaina, rvrbovsk, rysulliv, scweaver, swood, tyberry, vkumar, walters, wcosta, williams, wmealing, ycote, ymankad
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.4-rc2	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the IPVLAN network driver in the Linux kernel. This issue is caused by missing skb->cb initialization in `__ip_options_echo` and can lead to an out-of-bounds write stack overflow. This may allow a local user to cause a denial of service or potentially achieve local privilege escalation.	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:	2218676, 2218677, 2219657, 2219658, 2219659, 2219660, 2219661, 2219664, 2219665, 2219666, 2219667, 2219668, 2219669, 2219671, 2219674, 2219675, 2219676, 2219677, 2219678, 2218673, 2219656, 2219662, 2219670, 2219673, 2219679
Bug Blocks:	2218674

Description Guilherme de Almeida Suckevicz 2023-06-29 19:34:24 UTC

A heap out-of-bounds write vulnerability in the Linux Kernel ipvlan network driver can be exploited to achieve local privilege escalation. The out-of-bounds write is caused by missing skb->cb  initialization in the ipvlan network driver. The vulnerability is reachable if CONFIG_IPVLAN is enabled. We recommend upgrading past commit 90cbed5247439a966b645b34eb0a2e037836ea8e.

References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=90cbed5247439a966b645b34eb0a2e037836ea8e
https://kernel.dance/90cbed5247439a966b645b34eb0a2e037836ea8e

Comment 1 Guilherme de Almeida Suckevicz 2023-06-29 19:34:50 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2218673]

Comment 4 Justin M. Forbes 2023-07-03 17:57:55 UTC

This was fixed for Fedora with the 6.3.4 stable kernel updates.

Comment 12 errata-xmlrpc 2023-08-01 08:59:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:4378 https://access.redhat.com/errata/RHSA-2023:4378

Comment 13 errata-xmlrpc 2023-08-01 09:12:39 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:4380 https://access.redhat.com/errata/RHSA-2023:4380

Comment 14 errata-xmlrpc 2023-08-01 09:17:30 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:4377 https://access.redhat.com/errata/RHSA-2023:4377

Comment 15 errata-xmlrpc 2023-08-08 07:22:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

Via RHSA-2023:4516 https://access.redhat.com/errata/RHSA-2023:4516

Comment 16 errata-xmlrpc 2023-08-08 07:22:30 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

Via RHSA-2023:4515 https://access.redhat.com/errata/RHSA-2023:4515