Medium: kernel

Issue Overview:

A buffer overflow flaw was found in the way the Linux kernel’s Intel AES-NI instructions optimized version of the RFC4106 GCM mode decryption functionality handled fragmented packets. A remote attacker could use this flaw to crash, or potentially escalate their privileges on, a system over a connection with an active AEC-GCM mode IPSec security association. (CVE-2015-3331)

It was found that the Linux kernel’s ping socket implementation did not properly handle socket unhashing during spurious disconnects, which could lead to a use-after-free flaw. On x86-64 architecture systems, a local user able to create ping sockets could use this flaw to crash the system. On non-x86-64 architecture systems, a local user able to create ping sockets could use this flaw to escalate their privileges on the system. (CVE-2015-3636)

Affected Packages:

kernel

Issue Correction:
Run yum clean all followed by 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-3.14.42-31.38.amzn1.i686  
    perf-debuginfo-3.14.42-31.38.amzn1.i686  
    kernel-tools-devel-3.14.42-31.38.amzn1.i686  
    kernel-tools-debuginfo-3.14.42-31.38.amzn1.i686  
    kernel-tools-3.14.42-31.38.amzn1.i686  
    perf-3.14.42-31.38.amzn1.i686  
    kernel-debuginfo-3.14.42-31.38.amzn1.i686  
    kernel-debuginfo-common-i686-3.14.42-31.38.amzn1.i686  
    kernel-headers-3.14.42-31.38.amzn1.i686  
    kernel-devel-3.14.42-31.38.amzn1.i686  
  
noarch:  
    kernel-doc-3.14.42-31.38.amzn1.noarch  
  
src:  
    kernel-3.14.42-31.38.amzn1.src  
  
x86_64:  
    kernel-3.14.42-31.38.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-3.14.42-31.38.amzn1.x86_64  
    kernel-debuginfo-3.14.42-31.38.amzn1.x86_64  
    perf-debuginfo-3.14.42-31.38.amzn1.x86_64  
    kernel-tools-debuginfo-3.14.42-31.38.amzn1.x86_64  
    kernel-devel-3.14.42-31.38.amzn1.x86_64  
    kernel-headers-3.14.42-31.38.amzn1.x86_64  
    kernel-tools-devel-3.14.42-31.38.amzn1.x86_64  
    kernel-tools-3.14.42-31.38.amzn1.x86_64  
    perf-3.14.42-31.38.amzn1.x86_64  

Additional References

Red Hat: CVE-2015-3331, CVE-2015-3636

Mitre: CVE-2015-3331, CVE-2015-3636