CVE ID:	CVE-2018-16884
Description:	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.
Test IDs:	1.3.6.1.4.1.25623.1.0.875426   1.3.6.1.4.1.25623.1.0.875421   1.3.6.1.4.1.25623.1.0.891771   1.3.6.1.4.1.25623.1.1.4.2019.0326.1   1.3.6.1.4.1.25623.1.0.891731   1.3.6.1.4.1.25623.1.1.4.2019.0356.1
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2018-16884 106253 http://www.securityfocus.com/bid/106253 RHSA-2019:1873 https://access.redhat.com/errata/RHSA-2019:1873 RHSA-2019:1891 https://access.redhat.com/errata/RHSA-2019:1891 RHSA-2019:2696 https://access.redhat.com/errata/RHSA-2019:2696 RHSA-2019:2730 https://access.redhat.com/errata/RHSA-2019:2730 RHSA-2019:3309 https://access.redhat.com/errata/RHSA-2019:3309 RHSA-2019:3517 https://access.redhat.com/errata/RHSA-2019:3517 RHSA-2020:0204 https://access.redhat.com/errata/RHSA-2020:0204 USN-3932-1 https://usn.ubuntu.com/3932-1/ USN-3932-2 https://usn.ubuntu.com/3932-2/ USN-3980-1 https://usn.ubuntu.com/3980-1/ USN-3980-2 https://usn.ubuntu.com/3980-2/ USN-3981-1 https://usn.ubuntu.com/3981-1/ USN-3981-2 https://usn.ubuntu.com/3981-2/ [debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security update https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html [debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression update https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html [debian-lts-announce] 20190503 [SECURITY] [DLA 1771-1] linux-4.9 security update https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884 https://patchwork.kernel.org/cover/10733767/ https://patchwork.kernel.org/cover/10733767/ https://patchwork.kernel.org/patch/10733769/ https://patchwork.kernel.org/patch/10733769/ https://support.f5.com/csp/article/K21430012 https://support.f5.com/csp/article/K21430012 https://www.oracle.com/security-alerts/cpuApr2021.html https://www.oracle.com/security-alerts/cpuApr2021.html