Important: kernel

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

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-4.14.114-103.97.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  

Additional References

Red Hat: CVE-2019-3459, CVE-2019-3460, CVE-2019-7308

Mitre: CVE-2019-3459, CVE-2019-3460, CVE-2019-7308