Medium: kernel

Issue Overview:

It was found that paravirt_patch_call/jump() functions in the arch/x86/kernel/paravirt.c in the Linux kernel mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtualized guests.(CVE-2018-15594)

A buffer overflow due to a singed-unsigned comparsion was found in hidp_process_report() in the net/bluetooth/hidp/core.c in the Linux kernel. The buffer length is an unsigned int but gets cast to a signed int which in certain conditions can lead to a system panic and a denial-of-service.(CVE-2018-9363)

Note: The Release Date is incorrect. These CVEs were fixed Sept. 2018

Affected Packages:

kernel

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

New Packages:

i686:  
    perf-debuginfo-4.14.67-66.56.amzn1.i686  
    kernel-tools-debuginfo-4.14.67-66.56.amzn1.i686  
    kernel-debuginfo-4.14.67-66.56.amzn1.i686  
    kernel-4.14.67-66.56.amzn1.i686  
    kernel-debuginfo-common-i686-4.14.67-66.56.amzn1.i686  
    kernel-tools-devel-4.14.67-66.56.amzn1.i686  
    kernel-devel-4.14.67-66.56.amzn1.i686  
    kernel-tools-4.14.67-66.56.amzn1.i686  
    kernel-headers-4.14.67-66.56.amzn1.i686  
    perf-4.14.67-66.56.amzn1.i686  
  
src:  
    kernel-4.14.67-66.56.amzn1.src  
  
x86_64:  
    kernel-headers-4.14.67-66.56.amzn1.x86_64  
    kernel-debuginfo-4.14.67-66.56.amzn1.x86_64  
    perf-debuginfo-4.14.67-66.56.amzn1.x86_64  
    perf-4.14.67-66.56.amzn1.x86_64  
    kernel-4.14.67-66.56.amzn1.x86_64  
    kernel-tools-debuginfo-4.14.67-66.56.amzn1.x86_64  
    kernel-devel-4.14.67-66.56.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.14.67-66.56.amzn1.x86_64  
    kernel-tools-devel-4.14.67-66.56.amzn1.x86_64  
    kernel-tools-4.14.67-66.56.amzn1.x86_64  

Additional References

Red Hat: CVE-2018-15594, CVE-2018-9363

Mitre: CVE-2018-15594, CVE-2018-9363