CVE-2010-4083 Information

Description

The copy_semid_to_user function in ipc/sem.c in the Linux kernel before 2.6.36 does not initialize a certain structure which allows local users to obtain potentially sensitive information from kernel stack memory via a (1) IPC_INFO (2) SEM_INFO (3) IPC_STAT or (4) SEM_STAT command in a semctl system call.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=982f7c2b2e6a28f8f266e075d92e19c0dd4c6e56 http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html http://secunia.com/advisories/42778 http://secunia.com/advisories/42789 http://secunia.com/advisories/42890 http://secunia.com/advisories/42932 http://secunia.com/advisories/42963 http://secunia.com/advisories/43291 http://secunia.com/advisories/46397 http://www.debian.org/security/2010/dsa-2126 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36 http://www.mandriva.com/security/advisories?name=MDVSA-2011:051 http://www.openwall.com/lists/oss-security/2010/09/25/2 http://www.openwall.com/lists/oss-security/2010/10/06/6 http://www.openwall.com/lists/oss-security/2010/10/07/1 http://www.openwall.com/lists/oss-security/2010/10/25/3 http://www.redhat.com/support/errata/RHSA-2010-0958.html http://www.redhat.com/support/errata/RHSA-2011-0004.html http://www.redhat.com/support/errata/RHSA-2011-0007.html http://www.redhat.com/support/errata/RHSA-2011-0162.html http://www.securityfocus.com/archive/1/520102/100/0/threaded http://www.securityfocus.com/bid/43809 http://www.spinics.net/lists/mm-commits/msg80234.html http://www.vmware.com/security/advisories/VMSA-2011-0012.html http://www.vupen.com/english/advisories/2011/0012 http://www.vupen.com/english/advisories/2011/0024 http://www.vupen.com/english/advisories/2011/0124 http://www.vupen.com/english/advisories/2011/0168 http://www.vupen.com/english/advisories/2011/0298 http://www.vupen.com/english/advisories/2011/0375 https://bugzilla.redhat.com/show_bug.cgi?id=648673