Medium: kernel

Issue Overview:

The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation. (CVE-2017-12134)

Affected Packages:

kernel

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

New Packages:

i686:  
    kernel-devel-4.9.43-17.39.amzn1.i686  
    kernel-tools-4.9.43-17.39.amzn1.i686  
    perf-debuginfo-4.9.43-17.39.amzn1.i686  
    kernel-headers-4.9.43-17.39.amzn1.i686  
    kernel-tools-devel-4.9.43-17.39.amzn1.i686  
    perf-4.9.43-17.39.amzn1.i686  
    kernel-debuginfo-4.9.43-17.39.amzn1.i686  
    kernel-debuginfo-common-i686-4.9.43-17.39.amzn1.i686  
    kernel-4.9.43-17.39.amzn1.i686  
    kernel-tools-debuginfo-4.9.43-17.39.amzn1.i686  
  
noarch:  
    kernel-doc-4.9.43-17.39.amzn1.noarch  
  
src:  
    kernel-4.9.43-17.39.amzn1.src  
  
x86_64:  
    kernel-debuginfo-common-x86_64-4.9.43-17.39.amzn1.x86_64  
    kernel-tools-4.9.43-17.39.amzn1.x86_64  
    perf-debuginfo-4.9.43-17.39.amzn1.x86_64  
    perf-4.9.43-17.39.amzn1.x86_64  
    kernel-tools-devel-4.9.43-17.39.amzn1.x86_64  
    kernel-tools-debuginfo-4.9.43-17.39.amzn1.x86_64  
    kernel-headers-4.9.43-17.39.amzn1.x86_64  
    kernel-devel-4.9.43-17.39.amzn1.x86_64  
    kernel-debuginfo-4.9.43-17.39.amzn1.x86_64  
    kernel-4.9.43-17.39.amzn1.x86_64  

Additional References

Red Hat: CVE-2017-12134

Mitre: CVE-2017-12134