Incorrect Permission Assignment for Critical Resource Affecting perf package, versions <0:4.18.0-305.el8
Threat Intelligence
EPSS
0.05% (21st
percentile)
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Test your applications- Snyk ID SNYK-RHEL8-PERF-4028772
- published 26 Jul 2021
- disclosed 5 Jun 2020
Introduced: 5 Jun 2020
CVE-2020-24394 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.
In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem objects when the filesystem lacks ACL support, aka CID-22cf8419f131. This occurs because the current umask is not considered.
References
- https://security.netapp.com/advisory/ntap-20200904-0003/
- https://access.redhat.com/security/cve/CVE-2020-24394
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=962254
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.8
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=22cf8419f1319ff87ec759d0ebdff4cbafaee832
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://access.redhat.com/errata/RHSA-2021:1578
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.html
- https://usn.ubuntu.com/4465-1/
- https://usn.ubuntu.com/4483-1/
- https://usn.ubuntu.com/4485-1/
- https://www.starwindsoftware.com/security/sw-20210325-0004/
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