ALAS2-2019-1222

Amazon Linux 2 Security Advisory: ALAS-2019-1222
Advisory Release Date: 2019-06-13 22:11 Pacific
Advisory Updated Date: 2019-06-17 18:02 Pacific
Severity: Critical
Issue Overview:

CVE-2019-11477, CVE-2019-11478 and CVE-2019-11479 describe vulnerabilities in the Linux kernel that can be remotely exploited using a specially crafted TCP connection, crashing the targeted system.

The latest Amazon Linux 2 AMIs as available in AWS EC2 already contain these kernels and are not vulnerable.


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 and reboot to update your system.

New Packages:
aarch64:
    kernel-4.14.123-111.109.amzn2.aarch64
    kernel-headers-4.14.123-111.109.amzn2.aarch64
    kernel-debuginfo-common-aarch64-4.14.123-111.109.amzn2.aarch64
    perf-4.14.123-111.109.amzn2.aarch64
    perf-debuginfo-4.14.123-111.109.amzn2.aarch64
    python-perf-4.14.123-111.109.amzn2.aarch64
    python-perf-debuginfo-4.14.123-111.109.amzn2.aarch64
    kernel-tools-4.14.123-111.109.amzn2.aarch64
    kernel-tools-devel-4.14.123-111.109.amzn2.aarch64
    kernel-tools-debuginfo-4.14.123-111.109.amzn2.aarch64
    kernel-devel-4.14.123-111.109.amzn2.aarch64
    kernel-debuginfo-4.14.123-111.109.amzn2.aarch64

i686:
    kernel-headers-4.14.123-111.109.amzn2.i686

src:
    kernel-4.14.123-111.109.amzn2.src

x86_64:
    kernel-4.14.123-111.109.amzn2.x86_64
    kernel-headers-4.14.123-111.109.amzn2.x86_64
    kernel-debuginfo-common-x86_64-4.14.123-111.109.amzn2.x86_64
    perf-4.14.123-111.109.amzn2.x86_64
    perf-debuginfo-4.14.123-111.109.amzn2.x86_64
    python-perf-4.14.123-111.109.amzn2.x86_64
    python-perf-debuginfo-4.14.123-111.109.amzn2.x86_64
    kernel-tools-4.14.123-111.109.amzn2.x86_64
    kernel-tools-devel-4.14.123-111.109.amzn2.x86_64
    kernel-tools-debuginfo-4.14.123-111.109.amzn2.x86_64
    kernel-devel-4.14.123-111.109.amzn2.x86_64
    kernel-debuginfo-4.14.123-111.109.amzn2.x86_64

Additional References

Red Hat: CVE-2019-11477, CVE-2019-11478, CVE-2019-11479

Mitre: CVE-2019-11477, CVE-2019-11478, CVE-2019-11479