The ib_uverbs_poll_cq function in drivers/infiniband/core/uverbs_cmd.c in the Linux kernel before 2.6.37 does not initialize a certain response buffer, which allows local users to obtain potentially sensitive information from kernel memory via vectors that cause this buffer to be only partially filled, a different vulnerability than CVE-2010-4649.

References

• https://nvd.nist.gov/vuln/detail/CVE-2011-1044
• https://bugzilla.redhat.com/show_bug.cgi?id=667916
• https://exchange.xforce.ibmcloud.com/vulnerabilities/65563
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7182afea8d1afd432a17c18162cc3fd441d0da93
• http://rhn.redhat.com/errata/RHSA-2011-0927.html
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37
• http://www.securityfocus.com/bid/46488