CVE-2022-41218

2022-09-2100:00:00

ubuntu.com

cve-2022-41218

drivers

media

dvb-core

refcount races

physical access

disconnect

dvb_demux_open

dvb_dmxdev_release

usn-5975-1

usn-6009-1

linux-gcp

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

30.8%

JSON

In drivers/media/dvb-core/dmxdev.c in the Linux kernel through 5.19.10,
there is a use-after-free caused by refcount races, affecting
dvb_demux_open and dvb_dmxdev_release.

Notes

Author	Note
cascardo	requires physical access to disconnect
rodrigo-zaiden	USN-5975-1 first publication included esm/xenial linux-gcp version 4.15.0-1146.162~16.04.1 by mistake, it got fixed in version 4.15.0-1147.163~16.04.1 as published in USN-6009-1.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-208.220UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-144.161UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-69.76UNKNOWN
ubuntu22.10noarchlinux< 5.19.0-40.41UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-239.273UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1153.166UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1097.105UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1033.37UNKNOWN
ubuntu22.10noarchlinux-aws< 5.19.0-1023.24UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1117.123UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-208.220	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-144.161	UNKNOWN
ubuntu	22.04	noarch	linux	< 5.15.0-69.76	UNKNOWN
ubuntu	22.10	noarch	linux	< 5.19.0-40.41	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-239.273	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1153.166	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1097.105	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1033.37	UNKNOWN
ubuntu	22.10	noarch	linux-aws	< 5.19.0-1023.24	UNKNOWN
ubuntu	14.04	noarch	linux-aws	< 4.4.0-1117.123	UNKNOWN