Bug 1960504 (CVE-2020-26147)

Summary:	CVE-2020-26147 kernel: reassembling mixed encrypted/plaintext fragments
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, adscvr, airlied, alciregi, bhu, bmasney, brdeoliv, bskeggs, chwhite, dhoward, dvlasenk, fhrbata, fpacheco, hdegoede, hkrzesin, ihuguet, jarod, jarodwilson, jeremy, jforbes, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mlangsdo, nmurray, ptalbert, qzhao, rkeshri, rvrbovsk, steved, swood, walters, wcosta, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	Kernel 5.13	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in ieee80211_rx_h_defragment in net/mac80211/rx.c in the Linux Kernel's WiFi implementation. This vulnerability can be abused to inject packets or exfiltrate selected fragments when another device sends fragmented frames, and the WEP, CCMP, or GCMP data-confidentiality protocol is used. The highest threat from this vulnerability is to integrity.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-09 20:54:54 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:	1978181, 1960505, 1977679, 1977680
Bug Blocks:	1959275

Description Dhananjay Arunesh 2021-05-14 03:53:13 UTC

A vulnerability was found in Linux Kernel, where the wifi implementations reassemble 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/
https://lore.kernel.org/linux-wireless/20210511200110.30c4394bb835.I5acfdb552cc1d20c339c262315950b3eac491397@changeid/

Comment 1 Dhananjay Arunesh 2021-05-14 03:53:50 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1960505]

Comment 11 Justin M. Forbes 2021-06-29 16:21:07 UTC

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

Comment 17 errata-xmlrpc 2021-11-09 17:23:20 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 18 errata-xmlrpc 2021-11-09 18:26:39 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 19 Product Security DevOps Team 2021-11-09 20:54:30 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-2020-26147