NULL Pointer Dereference Affecting perf package, versions <0:4.18.0-193.el8
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Test your applications- Snyk ID SNYK-RHEL8-PERF-3728894
- published 26 Jul 2021
- disclosed 3 Jun 2019
Introduced: 3 Jun 2019
CVE-2018-16871 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-193.el8 or higher.
This issue was patched in RHSA-2020:1769.
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 NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16871
- https://security.netapp.com/advisory/ntap-20211004-0002/
- https://support.f5.com/csp/article/K18657134
- https://support.f5.com/csp/article/K18657134?utm_source=f5support&utm_medium=RSS
- https://access.redhat.com/security/cve/CVE-2018-16871
- https://access.redhat.com/errata/RHSA-2020:1769
- https://bugzilla.redhat.com/show_bug.cgi?id=1655162
- https://support.f5.com/csp/article/K18657134?utm_source=f5support&%3Butm_medium=RSS