CVE-2010-3081
CVE-2010-3081
The compat_alloc_user_space functions in include/asm/compat.h files in the Linux kernel before 2.6.36-rc4-git2 on 64-bit platforms do not properly allocate the userspace memory required for the 32-bit compatibility layer, which allows local users to gain privileges by leveraging the ability of the compat_mc_getsockopt function (aka the MCAST_MSFILTER getsockopt support) to control a certain length value, related to a "stack pointer underflow" issue, as exploited in the wild in September 2010.
Affected products
n/a · n/apublic PoCs found — 1
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http://archives.neohapsis.com/archives/fulldisclosure/2010-09/0273.htmlhttp://archives.neohapsis.com/archives/fulldisclosure/2010-09/0278.htmlhttp://blog.ksplice.com/2010/09/cve-2010-3081/http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c41d68a513c71e35a14f66d71782d27a79a81ea6http://isc.sans.edu/diary.html?storyid=9574http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.htmlhttp://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.htmlhttp://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.htmlhttp://marc.info/?l=oss-security&m=128461522230211&w=2https://access.redhat.com/kb/docs/DOC-40265https://bugzilla.redhat.com/show_bug.cgi?id=634457http://secunia.com/advisories/42384