Amazon Linux AMI : kernel (ALAS-2012-100)

This script is Copyright (C) 2013-2015 Tenable Network Security, Inc.

Synopsis :

The remote Amazon Linux AMI host is missing a security update.

Description :

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.

See also :

Solution :

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

Risk factor :

Medium / CVSS Base Score : 4.9

Family: Amazon Linux Local Security Checks

Nessus Plugin ID: 69590 ()

Bugtraq ID:

CVE ID: CVE-2011-1083

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