Amazon Linux 2 Security Advisory: ALAS-2019-1279
Advisory Release Date: 2019-09-13 23:08 Pacific
Advisory Updated Date: 2019-09-19 16:05 Pacific
Severity:
Low
Issue Overview:
An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR. (CVE-2018-7755)
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-4.14.77-80.57.amzn2.aarch64
kernel-headers-4.14.77-80.57.amzn2.aarch64
kernel-debuginfo-common-aarch64-4.14.77-80.57.amzn2.aarch64
perf-4.14.77-80.57.amzn2.aarch64
perf-debuginfo-4.14.77-80.57.amzn2.aarch64
python-perf-4.14.77-80.57.amzn2.aarch64
python-perf-debuginfo-4.14.77-80.57.amzn2.aarch64
kernel-tools-4.14.77-80.57.amzn2.aarch64
kernel-tools-devel-4.14.77-80.57.amzn2.aarch64
kernel-tools-debuginfo-4.14.77-80.57.amzn2.aarch64
kernel-devel-4.14.77-80.57.amzn2.aarch64
kernel-debuginfo-4.14.77-80.57.amzn2.aarch64
i686:
kernel-headers-4.14.77-80.57.amzn2.i686
src:
kernel-4.14.77-80.57.amzn2.src
x86_64:
kernel-4.14.77-80.57.amzn2.x86_64
kernel-headers-4.14.77-80.57.amzn2.x86_64
kernel-debuginfo-common-x86_64-4.14.77-80.57.amzn2.x86_64
perf-4.14.77-80.57.amzn2.x86_64
perf-debuginfo-4.14.77-80.57.amzn2.x86_64
python-perf-4.14.77-80.57.amzn2.x86_64
python-perf-debuginfo-4.14.77-80.57.amzn2.x86_64
kernel-tools-4.14.77-80.57.amzn2.x86_64
kernel-tools-devel-4.14.77-80.57.amzn2.x86_64
kernel-tools-debuginfo-4.14.77-80.57.amzn2.x86_64
kernel-devel-4.14.77-80.57.amzn2.x86_64
kernel-debuginfo-4.14.77-80.57.amzn2.x86_64