Bug 1759188 (CVE-2018-21008)

Summary:	CVE-2018-21008 kernel: use-after-free can be caused by the function rsi_mac80211_detach in the file drivers/net/wireless/rsi/rsi_91x_mac80211.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	acaringi, airlied, bdettelb, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jschorr, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, rt-maint, rvrbovsk, steved, williams, wmealing
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 Redpine Signals driver implementation. A local attacker who is able force a module load (rsi_sdio) or usb plug/unplug could cause a system crash or memory corruption leading to privilege escalation. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-12-03 07:04:49 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:	1759189
Bug Blocks:	1759190

Description Guilherme de Almeida Suckevicz 2019-10-07 14:53:47 UTC

 
An use-after-free flaw was discovered in the Linux kernels 80211 detach function in the Redpine Signals Inc driver implementation.  A local attacker who is able force a module load (rsi_sdio) or usb plug/unplug could possible cause a system crash or possible memory corruption leading to privilege escalation.

References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=abd39c6ded9db53aa44c2540092bdd5fb6590fa8
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.7

Comment 1 Guilherme de Almeida Suckevicz 2019-10-07 14:54:05 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1759189]

Comment 2 Justin M. Forbes 2019-10-07 15:36:58 UTC

This was fixed for Fedora with the 4.16.7 stable update.

Comment 5 Product Security DevOps Team 2019-12-03 07:04:49 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-2018-21008

Comment 6 Eric Christensen 2020-05-04 17:52:32 UTC

External References:

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.7