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Linux Kernel Multiple Vulnerabilities
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Secunia Advisory:
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SA30241
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Release Date:
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2008-05-15
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Last Update:
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2008-05-19
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Critical:
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Moderately critical
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Impact:
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Security Bypass
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-2008-2136 (Secunia mirror)
CVE-2008-2137 (Secunia mirror)
CVE-2008-2148 (Secunia mirror)
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Description:
Some vulnerabilities have been reported in the Linux kernel, which can be exploited by malicious, local users to bypass certain security restrictions or cause a DoS (Denial of service), and by malicious people to potentially cause a DoS.
1) An error exists in the implementation of the "sys_utimensat()" system call. This can be exploited to update the access or modification time of arbitrary files via specially crafted arguments passed to the affected system call.
2) A memory leak exists in the "ipip6_rcv()" function included in the IPv6 over IPv4 (SIP) tunneling driver. This can be exploited to potentially exhaust all available memory via specially crafted network packets.
3) An error when checking "mmap()" address limits on SPARC platforms can be exploited to crash the system.
The vulnerabilities are reported in version 2.6.25.2. Prior versions may also be affected.
Solution:
Update to version 2.6.25.3.
Provided and/or discovered by:
1, 3) Reported by the vendor.
2) Paul Marks.
Changelog:
2008-05-19: Added vulnerability #3 to the advisory. Updated the "Original Advisory" section.
Original Advisory:
http://marc.info/?l=linux-netdev&m=121030861218192&w=2
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.3
http://kerneltrap.org/mailarchive/git-commits-head/2008/5/8/1760604
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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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