Описание
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.
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.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2018-16884
- 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://bugzilla.redhat.com/show_bug.cgi?id=1660375
- https://access.redhat.com/security/cve/CVE-2018-16884
- https://access.redhat.com/errata/RHSA-2020:2854
- 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
- https://access.redhat.com/errata/RHSA-2019:1873
- http://www.securityfocus.com/bid/106253
Связанные уязвимости
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.
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.
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.
A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares ...
Security update for the Linux Kernel (Live Patch 25 for SLE 12 SP2)