ALAS2-2019-1201


Amazon Linux 2 Security Advisory: ALAS-2019-1201
Advisory Release Date: 2019-05-03 00:12 Pacific
Severity: Important

Issue Overview:

A flaw was found in the Linux kernel's implementation of logical link control and adaptation protocol (L2CAP), part of the Bluetooth stack in the l2cap_parse_conf_rsp and l2cap_parse_conf_req functions. An attacker with physical access within the range of standard Bluetooth transmission can create a specially crafted packet. The response to this specially crafted packet can contain part of the kernel stack which can be used in a further attack.(CVE-2019-3460 )

A flaw was found in the Linux kernels implementation of Logical link control and adaptation protocol (L2CAP), part of the Bluetooth stack. An attacker with physical access within the range of standard Bluetooth transmission can create a specially crafted packet. The response to this specially crafted packet can contain part of the kernel stack which can be used in a further attack.(CVE-2019-3459 )

A bypass was found for the Spectre v1 hardening in the eBPF engine of the Linux kernel. The code in the kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic in various cases, including cases of different branches with different state or limits to sanitize, leading to side-channel attacks.(CVE-2019-7308 )


Affected Packages:

kernel


Issue Correction:
Run yum update kernel to update your system.

New Packages:
aarch64:
    kernel-4.14.114-103.97.amzn2.aarch64
    kernel-headers-4.14.114-103.97.amzn2.aarch64
    kernel-debuginfo-common-aarch64-4.14.114-103.97.amzn2.aarch64
    perf-4.14.114-103.97.amzn2.aarch64
    perf-debuginfo-4.14.114-103.97.amzn2.aarch64
    python-perf-4.14.114-103.97.amzn2.aarch64
    python-perf-debuginfo-4.14.114-103.97.amzn2.aarch64
    kernel-tools-4.14.114-103.97.amzn2.aarch64
    kernel-tools-devel-4.14.114-103.97.amzn2.aarch64
    kernel-tools-debuginfo-4.14.114-103.97.amzn2.aarch64
    kernel-devel-4.14.114-103.97.amzn2.aarch64
    kernel-debuginfo-4.14.114-103.97.amzn2.aarch64

i686:
    kernel-headers-4.14.114-103.97.amzn2.i686

src:
    kernel-4.14.114-103.97.amzn2.src

x86_64:
    kernel-4.14.114-103.97.amzn2.x86_64
    kernel-headers-4.14.114-103.97.amzn2.x86_64
    kernel-debuginfo-common-x86_64-4.14.114-103.97.amzn2.x86_64
    perf-4.14.114-103.97.amzn2.x86_64
    perf-debuginfo-4.14.114-103.97.amzn2.x86_64
    python-perf-4.14.114-103.97.amzn2.x86_64
    python-perf-debuginfo-4.14.114-103.97.amzn2.x86_64
    kernel-tools-4.14.114-103.97.amzn2.x86_64
    kernel-tools-devel-4.14.114-103.97.amzn2.x86_64
    kernel-tools-debuginfo-4.14.114-103.97.amzn2.x86_64
    kernel-devel-4.14.114-103.97.amzn2.x86_64
    kernel-debuginfo-4.14.114-103.97.amzn2.x86_64