Information Exposure Affecting perf package, versions <0:4.18.0-348.el8
Threat Intelligence
EPSS
0.04% (6th
percentile)
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Test your applications- Snyk ID SNYK-RHEL8-PERF-4180378
- published 23 Aug 2021
- disclosed 12 Aug 2021
Introduced: 12 Aug 2021
CVE-2021-3732 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-348.el8 or higher.
This issue was patched in RHSA-2021:4356.
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 flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible.
References
- https://access.redhat.com/security/cve/CVE-2021-3732
- https://access.redhat.com/errata/RHSA-2021:4356
- https://bugzilla.redhat.com/show_bug.cgi?id=1995249
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=427215d85e8d1476da1a86b8d67aceb485eb3631
- https://github.com/torvalds/linux/commit/427215d85e8d1476da1a86b8d67aceb485eb3631
- https://ubuntu.com/security/CVE-2021-3732
CVSS Scores
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