PT-2022-6248 · Linux+10 · Linux Kernel+10
Hyunwoo Kim
·
Published
2022-11-15
·
Updated
2024-06-15
·
CVE-2022-45886
CVSS v3.1
7.0
High
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.0.9
Description
The issue is related to a use-after-free condition in the Linux kernel's DVB driver, specifically in the drivers/media/dvb-core/dvb net.c module. This condition is caused by a race between the disconnect and dvb device open functions. Exploitation of this issue could allow an attacker to cause a denial of service or elevate their privileges.
Recommendations
For Linux kernel versions prior to 6.0.9, consider updating to a version 6.0.9 or later to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable module drivers/media/dvb-core/dvb net.c to minimize the risk of exploitation. Avoid using the
dvb device open function in conjunction with the disconnect function until the issue is resolved.Exploit
Fix
Use After Free
Race Condition
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Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu