CVE-2006-5174 - Itty bitty Pisses

Description

The copy_from_user function in the uaccess code in Linux kernel 2.6 before 2.6.19-rc1 when running on s390 does not properly clear a kernel buffer which allows local user space programs to read portions of kernel memory by \appending to a file from a bad address\ which triggers a fault that prevents the unused memory from being cleared in the kernel buffer.

Reference

http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=52149ba6b0ddf3e9d965257cc0513193650b3ea8 http://www.securityfocus.com/bid/20379 http://secunia.com/advisories/22289 http://www.redhat.com/support/errata/RHSA-2006-0710.html http://secunia.com/advisories/22497 http://securitytracker.com/id?1017090 http://lkml.org/lkml/2006/11/5/46 http://support.avaya.com/elmodocs2/security/ASA-2006-254.htm http://secunia.com/advisories/23064 http://www.us.debian.org/security/2006/dsa-1233 http://secunia.com/advisories/23370 http://www.us.debian.org/security/2006/dsa-1237 http://secunia.com/advisories/23395 http://www.novell.com/linux/security/advisories/2006_79_kernel.html http://support.avaya.com/elmodocs2/security/ASA-2007-063.htm http://rhn.redhat.com/errata/RHSA-2007-0014.html http://secunia.com/advisories/23997 http://secunia.com/advisories/24206 http://secunia.com/advisories/23474 http://www.vupen.com/english/advisories/2006/3938 https://exchange.xforce.ibmcloud.com/vulnerabilities/29378 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9885