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Linux Kernel Multiple Denial of Service Vulnerabilities
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Secunia Advisory:
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SA27664
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Release Date:
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2007-11-19
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Popularity:
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8,109 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | Linux Kernel 2.6.x
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| CVE reference: | CVE-2007-5500
CVE-2007-5501
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Description:
Some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious, local users and by malicious people to cause a DoS (Denial of Service).
1) An error within the "wait_task_stopped()" function can be exploited to cause a DoS by manipulating the state of a child process while the parent is waiting for the state to change (e.g. the parent is inside "wait()" or "waitpid()").
2) An NULL-pointer dereference error exists within the "tcp_sacktag_write_queue()" function when processing ACK packets. This can be exploited to crash an affected system via specially crafted ACK packets.
The vulnerabilities are reported in versions prior to 2.6.23.8.
Solution:
Update to version 2.6.23.8.
Provided and/or discovered by:
1) Roland McGrath
2) Ilpo Järvinen
Original Advisory:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.8
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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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