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.
CVSS Details
- CVSS 3.1 Base Score: 8
- CVSS 3.1 Vector: (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
- CVSS 3.0 Base Score: 6.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade kernel-debuginfo-common-aarch64Upgrade python-perfUpgrade kernel-toolsUpgrade kernel-develUpgrade kernel-headersUpgrade kernel-tools-develUpgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade perfUpgrade perf-debuginfo | Apr 27, 2020 | Dec 18, 2018 |
| Amazon_linux | — | Upgrade kernel | Jan 25, 2019 | Dec 18, 2018 |
| Centos_linux | — | Upgrade kernel-rtUpgrade kernel | Aug 1, 2019 | Dec 18, 2018 |
| Debian | — | Upgrade linux | Mar 28, 2019 | Dec 18, 2018 |
| Huawei Euleros 2_0_sp2 | — | Upgrade perfUpgrade kernel-toolsUpgrade kernel-develUpgrade python-perfUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-debuginfoUpgrade kernel-debugUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-devel | May 30, 2019 | Dec 18, 2018 |
| Huawei Euleros 2_0_sp3 | — | Upgrade kernel-develUpgrade python-perfUpgrade kernel-tools-libsUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade kernel-toolsUpgrade perfUpgrade kernel-headers | May 30, 2019 | Dec 18, 2018 |
| Huawei Euleros 2_0_sp5 | — | Upgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-libsUpgrade python-perfUpgrade kernelUpgrade kernel-toolsUpgrade perfUpgrade kernel-develUpgrade kernel-debuginfo | May 1, 2019 | Dec 18, 2018 |
| Oracle_linux | — | Upgrade kernelUpgrade kernel-uek | Jul 31, 2019 | Nov 27, 2018 |
| Redhat Openshift | — | Upgrade redhat-coreos | Dec 29, 2020 | Dec 18, 2018 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rt | Jul 30, 2019 | Dec 18, 2018 |
| Suse | — | Upgrade kernel-defaultUpgrade kernel-source-azureUpgrade kernel-obs-buildUpgrade kernel-default-extraUpgrade kernel-azure-baseUpgrade kernel-default-manUpgrade kernel-docsUpgrade kernel-devel-azure | Jan 18, 2019 | Dec 18, 2018 |
| Ubuntu | — | Upgrade linux-image-4.4.0-145-powerpc64-embUpgrade linux-image-virtual-hwe-18.04Upgrade linux-image-generic-lpae-hwe-18.04Upgrade linux-image-snapdragonUpgrade linux-image-oemUpgrade linux-image-generic-lpaeUpgrade linux-image-4.4.0-144-powerpc-e500mcUpgrade linux-image-generic-lts-xenialUpgrade linux-image-4.4.0-144-powerpc64-embUpgrade linux-image-4.18.0-20-genericUpgrade linux-image-gkeUpgrade linux-image-azureUpgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-virtual-lts-xenialUpgrade linux-image-4.4.0-144-genericUpgrade linux-image-4.15.0-50-generic-lpaeUpgrade linux-image-4.4.0-1110-snapdragonUpgrade linux-image-4.18.0-20-lowlatencyUpgrade linux-image-powerpc-e500mcUpgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-4.4.0-1043-kvmUpgrade linux-image-powerpc64-smp-lts-xenialUpgrade linux-image-generic-hwe-16.04Upgrade linux-image-4.4.0-144-powerpc64-smpUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-4.15.0-1039-awsUpgrade linux-image-4.18.0-1014-raspi2Upgrade linux-image-genericUpgrade linux-image-4.4.0-145-powerpc64-smpUpgrade linux-image-powerpc64-smpUpgrade linux-image-4.15.0-1013-oracleUpgrade linux-image-4.15.0-50-lowlatencyUpgrade linux-image-powerpc-smp-lts-xenialUpgrade linux-image-4.15.0-50-genericUpgrade linux-image-4.4.0-145-lowlatencyUpgrade linux-image-kvmUpgrade linux-image-awsUpgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-4.4.0-145-genericUpgrade linux-image-powerpc-e500mc-lts-xenialUpgrade linux-image-lowlatencyUpgrade linux-image-4.4.0-144-lowlatencyUpgrade linux-image-4.18.0-20-snapdragonUpgrade linux-image-4.15.0-1045-azureUpgrade linux-image-4.15.0-1053-snapdragonUpgrade linux-image-4.18.0-1018-azureUpgrade linux-image-4.15.0-1038-oemUpgrade linux-image-oracleUpgrade linux-image-4.18.0-1016-awsUpgrade linux-image-raspi2Upgrade linux-image-virtualUpgrade linux-image-4.4.0-1079-awsUpgrade linux-image-4.4.0-144-generic-lpaeUpgrade linux-image-4.18.0-1012-kvmUpgrade linux-image-4.15.0-1032-gcpUpgrade linux-image-virtual-hwe-16.04Upgrade linux-image-4.18.0-1011-gcpUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-powerpc64-embUpgrade linux-image-4.4.0-145-powerpc-smpUpgrade linux-image-4.4.0-145-generic-lpaeUpgrade linux-image-4.15.0-1036-raspi2Upgrade linux-image-4.18.0-20-generic-lpaeUpgrade linux-image-powerpc-smpUpgrade linux-image-generic-lpae-hwe-16.04Upgrade linux-image-4.4.0-145-powerpc-e500mcUpgrade linux-image-4.15.0-1034-kvmUpgrade linux-image-4.4.0-1040-awsUpgrade linux-image-generic-lpae-lts-xenialUpgrade linux-image-4.4.0-1106-raspi2Upgrade linux-image-4.4.0-144-powerpc-smpUpgrade linux-image-gcpUpgrade linux-image-powerpc64-emb-lts-xenial | Apr 9, 2019 | Dec 18, 2018 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub