CVE ID:	CVE-2010-4258
Description:	The do_exit function in kernel/exit.c in the Linux kernel before 2.6.36.2 does not properly handle a KERNEL_DS get_fs value, which allows local users to bypass intended access_ok restrictions, overwrite arbitrary kernel memory locations, and gain privileges by leveraging a (1) BUG, (2) NULL pointer dereference, or (3) page fault, as demonstrated by vectors involving the clear_child_tid feature and the splice system call.
Test IDs:	1.3.6.1.4.1.25623.1.0.68745   1.3.6.1.4.1.25623.1.0.68992
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2010-4258 20101207 Linux kernel exploit http://archives.neohapsis.com/archives/fulldisclosure/2010-12/0086.html 42745 http://secunia.com/advisories/42745 42778 http://secunia.com/advisories/42778 42801 http://secunia.com/advisories/42801 42932 http://secunia.com/advisories/42932 43056 http://secunia.com/advisories/43056 43291 http://secunia.com/advisories/43291 ADV-2010-3321 http://www.vupen.com/english/advisories/2010/3321 ADV-2011-0012 http://www.vupen.com/english/advisories/2011/0012 ADV-2011-0124 http://www.vupen.com/english/advisories/2011/0124 ADV-2011-0213 http://www.vupen.com/english/advisories/2011/0213 ADV-2011-0298 http://www.vupen.com/english/advisories/2011/0298 ADV-2011-0375 http://www.vupen.com/english/advisories/2011/0375 FEDORA-2010-18983 http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052513.html MDVSA-2011:029 http://www.mandriva.com/security/advisories?name=MDVSA-2011:029 SUSE-SA:2011:001 http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html SUSE-SA:2011:002 http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html SUSE-SA:2011:004 http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html SUSE-SA:2011:005 http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00007.html SUSE-SA:2011:007 http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html SUSE-SA:2011:008 http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html [linux-kernel] 20101201 Re: [PATCH v2] do_exit(): Make sure we run with get_fs() == USER_DS. https://lkml.org/lkml/2010/12/1/543 [linux-kernel] 20101201 [PATCH v2] do_exit(): Make sure we run with get_fs() == USER_DS. http://marc.info/?l=linux-kernel&m=129117048916957&w=2 [oss-security] 20101202 CVE request: kernel: failure to revert address limit override in OOPS error path http://openwall.com/lists/oss-security/2010/12/02/2 [oss-security] 20101202 Re: CVE request: kernel: failure to revert address limit override in OOPS error path http://openwall.com/lists/oss-security/2010/12/02/7 [oss-security] 20101202 Re: kernel: Dangerous interaction between clear_child_tid, set_fs(), and kernel oopses http://openwall.com/lists/oss-security/2010/12/02/4 [oss-security] 20101202 kernel: Dangerous interaction between clear_child_tid, set_fs(), and kernel oopses http://openwall.com/lists/oss-security/2010/12/02/3 [oss-security] 20101208 Re: kernel: Dangerous interaction between clear_child_tid, set_fs(), and kernel oopses http://openwall.com/lists/oss-security/2010/12/08/4 [oss-security] 20101208 Re: kernel: Dangerous interaction between clear_child_tid, set_fs(), and kernel oopses http://openwall.com/lists/oss-security/2010/12/08/5 [oss-security] 20101208 Re: kernel: Dangerous interaction between clear_child_tid, set_fs(), and kernel oopses http://openwall.com/lists/oss-security/2010/12/08/9 [oss-security] 20101209 Re: kernel: Dangerous interaction between clear_child_tid, set_fs(), and kernel oopses http://openwall.com/lists/oss-security/2010/12/09/14 [oss-security] 20101209 Re: kernel: Dangerous interaction between clear_child_tid, set_fs(), and kernel oopses http://openwall.com/lists/oss-security/2010/12/09/4 http://blog.nelhage.com/2010/12/cve-2010-4258-from-dos-to-privesc/ http://blog.nelhage.com/2010/12/cve-2010-4258-from-dos-to-privesc/ http://code.google.com/p/chromium-os/issues/detail?id=10234 http://code.google.com/p/chromium-os/issues/detail?id=10234 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=33dd94ae1ccbfb7bf0fb6c692bc3d1c4269e6177 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=33dd94ae1ccbfb7bf0fb6c692bc3d1c4269e6177 http://googlechromereleases.blogspot.com/2011/01/chrome-os-beta-channel-update.html http://googlechromereleases.blogspot.com/2011/01/chrome-os-beta-channel-update.html http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2 https://bugzilla.redhat.com/show_bug.cgi?id=659567 https://bugzilla.redhat.com/show_bug.cgi?id=659567