Race condition in Linux kernel - CVE-2020-12652
Published: May 21, 2020
Vulnerability identifier: #VU28160
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-12652
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in the "__mptctl_ioctl" function in "drivers/message/fusion/mptctl.c" file. A local administrator can hold an incorrect lock during the ioctl operation, trigger the race and gain unauthorized access to sensitive information and escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2020-12652
Install updates from vendor's website.
Linux kernel - update to 5.4.14