Medium: kernel

Issue Overview:

Missing length check of payload in net/sctp/sm_make_chunk.c:_sctp_make_chunk() function allows denial of service:
An error in the “_sctp_make_chunk()” function (net/sctp/sm_make_chunk.c) when handling SCTP, packet length can be exploited by a malicious local user to cause a kernel crash and a DoS. (CVE-2018-5803)

Mishandling mutex within libsas allowing local Denial of Service
The Serial Attached SCSI (SAS) implementation in the Linux kernel mishandles a mutex within libsas. This allows local users to cause a denial of service (deadlock) by triggering certain error-handling code. (CVE-2017-18232)

A flaw was found in the Linux kernel’s client-side implementation of the cifs protocol. This flaw allows an attacker controlling the server to kernel panic a client which has the CIFS server mounted.(CVE-2018-1066)

Affected Packages:

kernel

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

New Packages:

i686:  
    kernel-debuginfo-common-i686-4.9.93-41.60.amzn1.i686  
    kernel-4.9.93-41.60.amzn1.i686  
    kernel-tools-devel-4.9.93-41.60.amzn1.i686  
    perf-4.9.93-41.60.amzn1.i686  
    kernel-debuginfo-4.9.93-41.60.amzn1.i686  
    kernel-tools-debuginfo-4.9.93-41.60.amzn1.i686  
    kernel-devel-4.9.93-41.60.amzn1.i686  
    kernel-headers-4.9.93-41.60.amzn1.i686  
    kernel-tools-4.9.93-41.60.amzn1.i686  
    perf-debuginfo-4.9.93-41.60.amzn1.i686  
  
noarch:  
    kernel-doc-4.9.93-41.60.amzn1.noarch  
  
src:  
    kernel-4.9.93-41.60.amzn1.src  
  
x86_64:  
    perf-4.9.93-41.60.amzn1.x86_64  
    kernel-tools-debuginfo-4.9.93-41.60.amzn1.x86_64  
    perf-debuginfo-4.9.93-41.60.amzn1.x86_64  
    kernel-tools-4.9.93-41.60.amzn1.x86_64  
    kernel-4.9.93-41.60.amzn1.x86_64  
    kernel-devel-4.9.93-41.60.amzn1.x86_64  
    kernel-tools-devel-4.9.93-41.60.amzn1.x86_64  
    kernel-headers-4.9.93-41.60.amzn1.x86_64  
    kernel-debuginfo-4.9.93-41.60.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.9.93-41.60.amzn1.x86_64  

Additional References

Red Hat: CVE-2017-18232, CVE-2018-1066, CVE-2018-5803

Mitre: CVE-2017-18232, CVE-2018-1066, CVE-2018-5803