Use of uninitialized resource in Linux kernel - CVE-2022-2308
Published: November 30, 2022
Vulnerability identifier: #VU69765
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-2308
CWE-ID: CWE-908
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to usage of uninitialized resources in vDPA with VDUSE backend in Linux kernel. A local user can pass specially crafted data to the Virtio drivers, trigger uninitialized usage of resources and gain access to sensitive information.
Affected software
Linux kernel
Slackware Linux
linux-5.15.80/kernel-generic
linux-5.15.80/kernel-huge
linux-5.15.80/kernel-modules
linux-5.15.80/kernel-headers
Slackware Linux
linux-5.15.80/kernel-generic
linux-5.15.80/kernel-huge
linux-5.15.80/kernel-modules
linux-5.15.80/kernel-headers
How to mitigate CVE-2022-2308
Install updates from vendor's website.
linux-5.15.80/kernel-generic - update to 5.15.80
linux-5.15.80/kernel-huge - update to 5.15.80
linux-5.15.80/kernel-modules - update to 5.15.80
linux-5.15.80/kernel-headers - update to 5.15.80_smp
linux-5.15.80/kernel-huge - update to 5.15.80
linux-5.15.80/kernel-modules - update to 5.15.80
linux-5.15.80/kernel-headers - update to 5.15.80_smp