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Linux Kernel "mremap()" Missing Return Value Checking Privilege Escalation
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Secunia Advisory:
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SA10897
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Release Date:
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2004-02-18
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Last Update:
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2004-03-02
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Popularity:
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16,899 views
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Critical:
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Less critical
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Impact:
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Privilege escalation
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| OS: | Linux Kernel 2.2.x
Linux Kernel 2.4.x
Linux Kernel 2.6.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Paul Starzetz has reported a vulnerability in the Linux kernel, which can be exploited by malicious, local users to gain escalated privileges on a vulnerable system.
The problem is that the "mremap()" system call doesn't check values returned by the "do_munmap()" kernel function when moving VMAs (Virtual Memory Areas) or parts thereof.
Successful exploitation allows execution of arbitrary code with kernel level privileges.
The following versions are reportedly affected:
* Branch 2.2.x up to 2.2.25
* Branch 2.4.x up to 2.4.24
* Branch 2.6.x up to 2.6.2
An exploit is available.
NOTE: This is not the same vulnerability as the one reported early January 2004 in the same system call.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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