Medium: kernel

Issue Overview:

It was found that the data_len parameter of the sock_alloc_send_pskb() function in the Linux kernel’s networking implementation was not validated before use. A local user with access to a TUN/TAP virtual interface could use this flaw to crash the system or, potentially, escalate their privileges. Note that unprivileged users cannot access TUN/TAP devices until the root user grants them access. (CVE-2012-2136, Important)

Affected Packages:

kernel

Issue Correction:
Run yum update kernel to update your system. You will need to reboot your system in order for the new kernel to be running.

New Packages:

i686:  
    kernel-headers-3.2.19-1.28.6.amzn1.i686  
    kernel-tools-3.2.19-1.28.6.amzn1.i686  
    kernel-3.2.19-1.28.6.amzn1.i686  
    kernel-devel-3.2.19-1.28.6.amzn1.i686  
    kernel-debuginfo-common-i686-3.2.19-1.28.6.amzn1.i686  
    kernel-tools-debuginfo-3.2.19-1.28.6.amzn1.i686  
    kernel-debuginfo-3.2.19-1.28.6.amzn1.i686  
  
noarch:  
    kernel-doc-3.2.19-1.28.6.amzn1.noarch  
  
src:  
    kernel-3.2.19-1.28.6.amzn1.src  
  
x86_64:  
    kernel-tools-debuginfo-3.2.19-1.28.6.amzn1.x86_64  
    kernel-tools-3.2.19-1.28.6.amzn1.x86_64  
    kernel-debuginfo-3.2.19-1.28.6.amzn1.x86_64  
    kernel-devel-3.2.19-1.28.6.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-3.2.19-1.28.6.amzn1.x86_64  
    kernel-headers-3.2.19-1.28.6.amzn1.x86_64  
    kernel-3.2.19-1.28.6.amzn1.x86_64  

Additional References

Red Hat: CVE-2012-2136

Mitre: CVE-2012-2136