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Linux Kernel "vmi_write_ldt_entry()" Privilege Escalation
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Secunia Advisory:
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SA32124
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Release Date:
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2008-10-03
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Last Update:
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2008-10-09
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Popularity:
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4,265 views
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Critical:
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Less critical
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Impact:
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Privilege escalation
DoS
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Where:
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Local system
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Solution Status:
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Vendor Workaround
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| OS: | 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:
Eugene Teo has reported a vulnerability in the Linux Kernel, which can be exploited by malicious, local users in a VMI guest to cause a DoS (Denial of Service) and potentially gain escalated privileges.
The vulnerability is caused due to an error within the "vmi_write_ldt_entry()" function in arch/x86/kernel/vmi_32.c. This can be exploited to write values into the IDT by e.g. calling "sys_modify_ldt()".
Successful exploitation requires that the kernel is running as VMI guest on a x86 system.
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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