Bug 1945345 (CVE-2021-29646)

Summary:	CVE-2021-29646 kernel: improper input validation in tipc_nl_retrieve_key function in net/tipc/node.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, bdettelb, bhu, blc, bmasney, brdeoliv, bskeggs, chwhite, crwood, dhoward, dvlasenk, fhrbata, fpacheco, hdegoede, hkrzesin, jarodwilson, jeremy, jforbes, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mlangsdo, nmurray, ptalbert, qzhao, rvrbovsk, steved, tomckay, walters, williams
Target Milestone:	---	Keywords:	Reopened, Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw buffer overflow in the Linux kernel TIPC protocol functionality was found in the way user uses protocol with encryption enabled. A local user could use this flaw to crash the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-09 15:49:36 UTC	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:	1945346, 1950093, 1951005, 1951006, 1955086
Bug Blocks:	1945347

Description Guilherme de Almeida Suckevicz 2021-03-31 17:41:01 UTC

An issue was discovered in the Linux kernel before 5.11.11. tipc_nl_retrieve_key in net/tipc/node.c does not properly validate certain data sizes.

Reference and upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0217ed2848e8538bcf9172d97ed2eeb4a26041bb

Comment 1 Guilherme de Almeida Suckevicz 2021-03-31 17:41:53 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1945346]

Comment 2 Fedora Update System 2021-04-02 00:16:57 UTC

FEDORA-2021-41fb54ae9f has been pushed to the Fedora 34 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 3 Fedora Update System 2021-04-02 01:14:11 UTC

FEDORA-2021-6b0f287b8b has been pushed to the Fedora 32 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 4 Fedora Update System 2021-04-02 01:21:15 UTC

FEDORA-2021-2306e89112 has been pushed to the Fedora 33 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Product Security DevOps Team 2021-04-08 11:35:09 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-29646

Comment 21 errata-xmlrpc 2021-11-09 17:22:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4140 https://access.redhat.com/errata/RHSA-2021:4140

Comment 22 errata-xmlrpc 2021-11-09 18:24:31 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4356 https://access.redhat.com/errata/RHSA-2021:4356