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Old 07-22-2011, 07:41 PM
Tim Gardner
 
Default APPLIED: socket backlog handling

On 07/22/2011 10:42 AM, Andy Whitcroft wrote:

CVE-2010-4251
The socket implementation in net/core/sock.c in the Linux kernel
before 2.6.34 does not properly manage a backlog of received
packets, which allows remote attackers to cause a denial of service
(memory consumption) by sending a large amount of network traffic,
as demonstrated by netperf UDP tests.

CVE-2010-4805
The socket implementation in net/core/sock.c in the Linux kernel
before 2.6.35 does not properly manage a backlog of received
packets, which allows remote attackers to cause a denial of
service by sending a large amount of network traffic, related
to the sk_add_backlog function and the sk_rmem_alloc socket
field. NOTE: this vulnerability exists because of an incomplete
fix for CVE-2010-4251.

The fixes for these two CVEs have already hit most of the other branches.
Following this email is a heap of patches which are direct cherry-picks
from those that were acked and applied to the lucid master branch.

Proposing for lucid/fsl-imx51.

-apw




--
Tim Gardner tim.gardner@canonical.com

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