Bug 1696017 (CVE-2019-2024)

Summary:	CVE-2019-2024 kernel: media: em28xx: Use-after-free in em28xx/em28xx-dvb.c when disconnecting
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
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, airlied, bhu, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jkacur, john.j5live, jonathan, josef, jross, jstancek, jwboyer, kernel-maint, kernel-mgr, lgoncalv, linville, mchehab, mcressma, mjg59, nmurray, rt-maint, rvrbovsk, steved, vdronov, 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 flaw was found in the em28xx_dvb_fini() function in the drivers/media/usb/em28xx/em28xx-dvb.c file in the Linux kernel. A use-after-free vulnerability in em28xx/em28xx-dvb.c can cause denial of service (DoS).	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-27 03:27:52 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:	1696019, 1699658
Bug Blocks:	1696018

Description Pedro Sampaio 2019-04-04 03:02:58 UTC

A flaw was found in the em28xx_dvb_fini() finction in the drivers/media/usb/em28xx/em28xx-dvb.c file in the Linux kernel. A use-after-free vulnerability in em28xx/em28xx-dvb.c can cause denial of service (DoS).

Introduced by:

http://git.kernel.org/linus/425f53aaf76cce77b3bedd8ed4902bc94ed254ff

Fixed by:

http://git.kernel.org/linus/910b0797fa9e8af09c44a3fa36cb310ba7a7218d

Comment 1 Pedro Sampaio 2019-04-04 03:07:53 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1696019]

Comment 2 Justin M. Forbes 2019-04-04 13:16:10 UTC

This was fixed for Fedora with 4.16 kernels