Use After Free Affecting kernel package, versions <0:4.18.0-147.el8
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Test your applications- Snyk ID SNYK-CENTOS8-KERNEL-1998199
- published 26 Jul 2021
- disclosed 27 Nov 2018
Introduced: 27 Nov 2018
CVE-2018-16884 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel to version 0:4.18.0-147.el8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.
References
- http://www.securityfocus.com/bid/106253
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884
- https://patchwork.kernel.org/cover/10733767/
- https://patchwork.kernel.org/patch/10733769/
- https://support.f5.com/csp/article/K21430012
- https://access.redhat.com/security/cve/CVE-2018-16884
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
- https://access.redhat.com/errata/RHSA-2019:3517
- https://usn.ubuntu.com/3932-1/
- https://usn.ubuntu.com/3932-2/
- https://usn.ubuntu.com/3980-1/
- https://usn.ubuntu.com/3980-2/
- https://usn.ubuntu.com/3981-1/
- https://usn.ubuntu.com/3981-2/
- https://bugzilla.redhat.com/show_bug.cgi?id=1660375