What is CVE-2020-36557?

CVE-2020-36557 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.1/10. Published 2022-07-21.

How severe is CVE-2020-36557?

Medium severity. CVSS v3 base score is 5.1 out of 10.

Use After Free in Linux Kernel

CVE-2020-36557

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.

Vulnerability class: Race Condition

EPSS: 0.002 (10.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux Linux_kernel
N/a — versions n/a

Weakness classification (CWE)

References

cve@mitre.org (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Patch, x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2020-36557?: CVE-2020-36557 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.1/10. Published 2022-07-21.
How severe is CVE-2020-36557?: Medium severity. CVSS v3 base score is 5.1 out of 10.