Bug 1960496 (CVE-2020-26143)

Summary:	CVE-2020-26143 kernel: accepting fragmented plaintext frames in protected networks
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
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, bhu, blc, bmasney, brdeoliv, bskeggs, chwhite, dhoward, dvlasenk, fhrbata, fpacheco, hdegoede, hkrzesin, ihuguet, jarodwilson, jeremy, jforbes, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mlangsdo, nmurray, ptalbert, qzhao, rvrbovsk, steved, swood, walters, wcosta, williams
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 vulnerability was found in Linux kernel, where the WiFi implementations assemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-09 20:52:18 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	Red Hat1978181, 1960497, Red Hat1961930, Red Hat1961931, Red Hat1972034
Bug Blocks:	Embargoed1959275

Description Dhananjay Arunesh 2021-05-14 03:40:17 UTC

A vulnerability was found in Linux Kernel, where the wifi implementations eassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used.

Upstream patch:
https://lore.kernel.org/linux-wireless/20210511180259.159598-1-johannes@sipsolutions.net/

Comment 1 Dhananjay Arunesh 2021-05-14 03:40:55 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1960497]

Comment 16 errata-xmlrpc 2021-11-09 17:23:01 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 17 errata-xmlrpc 2021-11-09 18:26:10 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

Comment 18 Product Security DevOps Team 2021-11-09 20:52:14 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-2020-26143

Comment 19 Justin M. Forbes 2022-01-14 16:01:02 UTC

This was fixed for Fedora with the 5.12.9 stable kernel updates.