CVE-2010-4668 Information

Description

The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 2.6.37-rc7 allows local users to cause a denial of service (panic) via a zero-length I/O request in a device ioctl to a SCSI device related to an unaligned map. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4163.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5478755616ae2ef1ce144dded589b62b2a50d575 http://lkml.org/lkml/2010/11/29/68 http://lkml.org/lkml/2010/11/29/70 http://openwall.com/lists/oss-security/2010/11/29/1 http://openwall.com/lists/oss-security/2010/11/30/4 http://openwall.com/lists/oss-security/2010/11/30/7 http://secunia.com/advisories/42890 http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.37-rc7 http://www.redhat.com/support/errata/RHSA-2011-0007.html http://www.securityfocus.com/bid/45660 https://exchange.xforce.ibmcloud.com/vulnerabilities/64496 https://patchwork.kernel.org/patch/363282/