Medium: kernel

2012-07-05T16:19:00
ID ALAS-2012-100
Type amazon
Reporter Amazon
Modified 2014-09-14T16:33:00

Description

Issue Overview:

A flaw was found in the way the Linux kernel's Event Poll (epoll) subsystem handled large, nested epoll structures. A local, unprivileged user could use this flaw to cause a denial of service.

A malicious Network File System version 4 (NFSv4) server could return a crafted reply to a GETACL request, causing a denial of service on the client.

The rds_ib_xmit function in net/rds/ib_send.c in the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel 3.7.4 and earlier allows local users to cause a denial of service (BUG_ON and kernel panic) by establishing an RDS connection with the source IP address equal to the IPoIB interface's own IP address, as demonstrated by rds-ping.

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-tools-debuginfo-3.2.22-35.60.amzn1.i686  
    kernel-headers-3.2.22-35.60.amzn1.i686  
    kernel-tools-3.2.22-35.60.amzn1.i686  
    kernel-devel-3.2.22-35.60.amzn1.i686  
    kernel-debuginfo-3.2.22-35.60.amzn1.i686  
    kernel-3.2.22-35.60.amzn1.i686  
    kernel-debuginfo-common-i686-3.2.22-35.60.amzn1.i686

noarch:  
    kernel-doc-3.2.22-35.60.amzn1.noarch

src:  
    kernel-3.2.22-35.60.amzn1.src

x86_64:  
    kernel-tools-debuginfo-3.2.22-35.60.amzn1.x86_64  
    kernel-tools-3.2.22-35.60.amzn1.x86_64  
    kernel-devel-3.2.22-35.60.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-3.2.22-35.60.amzn1.x86_64  
    kernel-debuginfo-3.2.22-35.60.amzn1.x86_64  
    kernel-3.2.22-35.60.amzn1.x86_64  
    kernel-headers-3.2.22-35.60.amzn1.x86_64