Use After Free Affecting perf package, versions <0:4.18.0-305.el8
Threat Intelligence
EPSS
0.06% (25th
percentile)
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Test your applications- Snyk ID SNYK-RHEL8-PERF-3969818
- published 1 Aug 2022
- disclosed 21 Mar 2020
Introduced: 21 Mar 2020
CVE-2020-36557 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-305.el8 or higher.
This issue was patched in RHSA-2021:1578.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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.
CVSS Scores
version 3.1