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Old 07-07-2011, 01:11 PM
Tim Gardner
Default APPLIED: taskstats: don't allow duplicate entries in listener mode

On 07/07/2011 05:17 AM, Andy Whitcroft wrote:

The add_del_listener function in kernel/taskstats.c in the Linux
kernel and earlier does not prevent multiple registrations
of exit handlers, which allows local users to cause a denial of
service (memory and CPU consumption), and bypass the OOM Killer,
via a crafted application.

The fix for this issue has already hit oneiric via upstream. Following
this email are two patches, one a backport for hardy, and the other a
clean cherry-pick of the upstream commit for lucid, lucid/fsl-imx51,
maverick, maverick/ti-omap4, natty, and natty/ti-omap4.

Proposing for SRU to hardy, lucid, lucid/fsl-imx51, maverick,
maverick/ti-omap4, natty, and natty/ti-omap4.


Tim Gardner tim.gardner@canonical.com

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