The snd_hdspm_hwdep_ioctl function in sound/pci/rme9652/hdspm.c in the Linux kernel before 2.6.36-rc6 does not initialize a certain structure, which allows local users to obtain potentially sensitive information from kernel stack memory via an SNDRV_HDSPM_IOCTL_GET_CONFIG_INFO ioctl call.

References

• https://nvd.nist.gov/vuln/detail/CVE-2010-4081
• https://bugzilla.redhat.com/show_bug.cgi?id=648670
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e68d3b316ab7b02a074edc4f770e6a746390cb7d
• 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/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
• http://lkml.org/lkml/2010/9/25/41
• http://secunia.com/advisories/42778
• http://secunia.com/advisories/42801
• http://secunia.com/advisories/42884
• http://secunia.com/advisories/42890
• 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/testing/v2.6.36/ChangeLog-2.6.36-rc6
• 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-2011-0007.html
• http://www.redhat.com/support/errata/RHSA-2011-0017.html
• http://www.securityfocus.com/archive/1/520102/100/0/threaded
• http://www.securityfocus.com/bid/45063
• http://www.vmware.com/security/advisories/VMSA-2011-0012.html
• http://www.vupen.com/english/advisories/2011/0012
• http://www.vupen.com/english/advisories/2011/0298
• http://www.vupen.com/english/advisories/2011/0375