Linux Kernel 2.2 local Denial of Service - Secunia Advisories - Vulnerability Information

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Linux Kernel 2.2 local Denial of Service

Secunia Advisory:

SA7746

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Release Date:

2002-12-18

Last Update:

2003-07-01

Popularity:

8,023 views

Critical:

Less critical

Impact:

DoS

Where:

Local system

Solution Status:

Vendor Patch

OS:

Conectiva Linux 6.0
Debian GNU/Linux 2.x
Debian GNU/Linux 3.0
EnGarde Secure Community 1.x
Linux Kernel 2.2.x
Mandrake Linux 7.x
Red Hat Enterprise Linux AS 2.1
Red Hat Linux 6.2
Red Hat Linux 7.0
Slackware Linux 8.x
SuSE Linux 7.x
Trustix Linux 1.0
Trustix Linux 1.1
Trustix Linux 1.2
Trustix Linux 1.5

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Advisory Content (Page 1 of 3)

[ 1 ] [ 2 ] [ 3 ]

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Description:
Linux Kernel 2.2 has been found vulnerable to a Denial of Service condition. It is possible for local users to read the memory used by certain programs by using "/proc/pid/mem" and "mmap()".

However, requests are not validated properly. This can be exploited by users to request access to memory pages that are non-readable to the program that is analysed. If the user requests the kernel to read those memory pages, the system will crash.

This does not affect 2.4 kernels as they do not support "mmap()" on "/proc/pid/mem".

Change Page:
[ 1 ] [ 2 ] [ 3 ]

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