Amazon Linux 2 Security Advisory: ALAS-2019-1149
Advisory Release Date: 2019-01-23 23:20 Pacific
Advisory Updated Date: 2019-01-25 00:56 Pacific
Severity:
Important
Issue Overview:
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.(CVE-2018-16884)
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update kernel to update your system.
New Packages:
aarch64:
kernel-4.14.94-89.73.amzn2.aarch64
kernel-headers-4.14.94-89.73.amzn2.aarch64
kernel-debuginfo-common-aarch64-4.14.94-89.73.amzn2.aarch64
perf-4.14.94-89.73.amzn2.aarch64
perf-debuginfo-4.14.94-89.73.amzn2.aarch64
python-perf-4.14.94-89.73.amzn2.aarch64
python-perf-debuginfo-4.14.94-89.73.amzn2.aarch64
kernel-tools-4.14.94-89.73.amzn2.aarch64
kernel-tools-devel-4.14.94-89.73.amzn2.aarch64
kernel-tools-debuginfo-4.14.94-89.73.amzn2.aarch64
kernel-devel-4.14.94-89.73.amzn2.aarch64
kernel-debuginfo-4.14.94-89.73.amzn2.aarch64
i686:
kernel-headers-4.14.94-89.73.amzn2.i686
src:
kernel-4.14.94-89.73.amzn2.src
x86_64:
kernel-4.14.94-89.73.amzn2.x86_64
kernel-headers-4.14.94-89.73.amzn2.x86_64
kernel-debuginfo-common-x86_64-4.14.94-89.73.amzn2.x86_64
perf-4.14.94-89.73.amzn2.x86_64
perf-debuginfo-4.14.94-89.73.amzn2.x86_64
python-perf-4.14.94-89.73.amzn2.x86_64
python-perf-debuginfo-4.14.94-89.73.amzn2.x86_64
kernel-tools-4.14.94-89.73.amzn2.x86_64
kernel-tools-devel-4.14.94-89.73.amzn2.x86_64
kernel-tools-debuginfo-4.14.94-89.73.amzn2.x86_64
kernel-devel-4.14.94-89.73.amzn2.x86_64
kernel-debuginfo-4.14.94-89.73.amzn2.x86_64