CVE-2022-45886

2022-11-2518:02:30

redhat.com

access.redhat.com

linux kernel

race condition

dvb_net

local user

system crash

privilege escalation

kernel module

dvb-core

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

5.1%

JSON

A race condition flaw leading to a use-after-free issue was found in the Linux kernel media subsystem in the dvb_net component of the DVB core device driver. It could occur between the time the device is disconnected (.disconnect function) and the time the device node is opened (dvb_device_open function). A local user could use this flaw to crash the system or potentially escalate their privileges on the system.

Mitigation

To mitigate this issue, it is possible to prevent the affected code from being loaded by blacklisting the dvb-core kernel module. For instructions on how to blacklist a kernel module, please see <https://access.redhat.com/solutions/41278>.