CVE-2020-12652 Race condition in n/a
Local attackers can exploit a race condition in the Linux kernel's mptctl driver to potentially escalate privileges, though impact is limited by root requirements.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-12652?
CVE-2020-12652 is a medium-severity vulnerability in Linux kernel, published on 5 May 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The __mptctl_ioctl function in drivers/message/fusion/mptctl.c in the Linux kernel before 5.4.14 allows local users to hold an incorrect lock during the ioctl operation and trigger a race condition, i.e., a "double fetch" vulnerability, aka CID-28d76df18f0a. NOTE: the vendor states "The security impact of this bug is not as bad as it could have been because these operations are all privileged and root already has enormous destructive power."
Weakness: CWE-362
Which versions are affected by CVE-2020-12652?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2020-12652?
Apply the vendor's patch.
Is CVE-2020-12652 being exploited?
There is no known exploitation of CVE-2020-12652 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2020-12652, GHSA-4rx9-gpfg-xh6c, UBUNTU-CVE-2020-12652.