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Linux Kernel "mmap_min_addr" Security Bypass
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Secunia Advisory:
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SA28070
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Release Date:
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2007-12-12
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Last Update:
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2007-12-19
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Critical:
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Not critical
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Impact:
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Security Bypass
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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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| | CVE reference: | CVE-2007-6434 (Secunia mirror)
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Description:
A security issue has been reported in the Linux Kernel, which can be exploited by malicious, local users to bypass certain security restrictions.
The security issue is caused due to the improper enforcing of the "mmap_min_addr" limit. This can be exploited to allocate pages lower than "mmap_min_addr" by expanding the stack or via "do_brk()" in specially crafted binaries.
The security issue affects all 2.6.23 versions.
Solution:
Fixed in version 2.6.24-rc5.
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2007-12-19: Added CVE reference.
Original Advisory:
http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.24-rc5
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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