CVE-2020-36557

Description

A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.

Category

5.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220 mailing list patch vendor advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2 release notes patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-36557?
CVE-2020-36557 has been scored as a medium severity vulnerability.
How to fix CVE-2020-36557?
To fix CVE-2020-36557, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-36557 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-36557 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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