ALAS-2019-1279


Amazon Linux AMI Security Advisory: ALAS-2019-1279
Advisory Release Date: 2019-09-18 21:25 Pacific
Severity: Low
References: CVE-2018-7755 

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 )

Note: The Release Date is incorrect. This CVE was fixed Nov 2018


Affected Packages:

kernel


Issue Correction:
Run yum update kernel and reboot the instance to update your system.

New Packages:
i686:
    perf-4.14.77-69.57.amzn1.i686
    kernel-4.14.77-69.57.amzn1.i686
    kernel-devel-4.14.77-69.57.amzn1.i686
    perf-debuginfo-4.14.77-69.57.amzn1.i686
    kernel-debuginfo-common-i686-4.14.77-69.57.amzn1.i686
    kernel-tools-devel-4.14.77-69.57.amzn1.i686
    kernel-debuginfo-4.14.77-69.57.amzn1.i686
    kernel-tools-4.14.77-69.57.amzn1.i686
    kernel-tools-debuginfo-4.14.77-69.57.amzn1.i686
    kernel-headers-4.14.77-69.57.amzn1.i686

src:
    kernel-4.14.77-69.57.amzn1.src

x86_64:
    kernel-devel-4.14.77-69.57.amzn1.x86_64
    kernel-4.14.77-69.57.amzn1.x86_64
    kernel-headers-4.14.77-69.57.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.77-69.57.amzn1.x86_64
    kernel-tools-debuginfo-4.14.77-69.57.amzn1.x86_64
    kernel-tools-devel-4.14.77-69.57.amzn1.x86_64
    perf-debuginfo-4.14.77-69.57.amzn1.x86_64
    perf-4.14.77-69.57.amzn1.x86_64
    kernel-tools-4.14.77-69.57.amzn1.x86_64
    kernel-debuginfo-4.14.77-69.57.amzn1.x86_64