CVE-2022-45887

2022-11-2518:02:40

redhat.com

access.redhat.com

memory leak

linux kernel

ttusb dec driver

denial of service

local user

mitigation

blacklist

kernel module

4.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

5.1%

JSON

A memory leak issue was found in the Linux kernel media subsystem in the TTUSB DEC driver. It could occur in the ttusb_dec_exit_dvb() function because of the lack of a dvb_frontend_detach call. A local user could trigger this flaw by repeatedly plugging and unplugging the device, potentially causing a denial of service condition.

Mitigation

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