Detections
Analytics
CVE-2018-16884
high
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.
References
https://www.oracle.com/security-alerts/cpuApr2021.html
https://usn.ubuntu.com/3981-2/
https://usn.ubuntu.com/3981-1/
https://usn.ubuntu.com/3980-2/
https://usn.ubuntu.com/3980-1/
https://usn.ubuntu.com/3932-2/
https://usn.ubuntu.com/3932-1/
https://support.f5.com/csp/article/K21430012
https://patchwork.kernel.org/patch/10733769/
https://patchwork.kernel.org/cover/10733767/
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884
https://access.redhat.com/errata/RHSA-2020:0204
https://access.redhat.com/errata/RHSA-2019:3517
https://access.redhat.com/errata/RHSA-2019:3309
https://access.redhat.com/errata/RHSA-2019:2730
https://access.redhat.com/errata/RHSA-2019:2696
https://access.redhat.com/errata/RHSA-2019:1891