CVE-2018-16884
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.
- Score
- CVSS 3.1 8.0 High
- Status
- Modified - secalert@redhat.com
- Published
- 2018-12-18
- Last modified
- 2024-08-05
- Weaknesses
- CWE-416
Affected products
- Ubuntu Linux (Canonical)
- Debian Linux (Debian)
- Linux Kernel (Linux)
- Enterprise Linux (Redhat)
- Enterprise Mrg (Redhat)
- Kernel (Unknown)
References
- http://www.securityfocus.com/bid/106253
- https://access.redhat.com/errata/RHSA-2019:1873
- https://access.redhat.com/errata/RHSA-2019:1891
- https://access.redhat.com/errata/RHSA-2019:2696
- https://access.redhat.com/errata/RHSA-2019:2730
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://access.redhat.com/errata/RHSA-2020:0204
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884
- 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://patchwork.kernel.org/cover/10733767/
- https://patchwork.kernel.org/patch/10733769/
- https://support.f5.com/csp/article/K21430012
- 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://www.oracle.com/security-alerts/cpuApr2021.html
