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.
http://rhn.redhat.com/errata/RHSA-2007-0014.html
http://secunia.com/advisories/22289
http://secunia.com/advisories/22497
http://secunia.com/advisories/23064
http://secunia.com/advisories/23370
http://secunia.com/advisories/23395
http://secunia.com/advisories/23474
http://secunia.com/advisories/23997
http://secunia.com/advisories/24206
http://securitytracker.com/id?1017090
https://exchange.xforce.ibmcloud.com/vulnerabilities/29378
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9885
http://support.avaya.com/elmodocs2/security/ASA-2006-254.htm
http://support.avaya.com/elmodocs2/security/ASA-2007-063.htm
http://www.novell.com/linux/security/advisories/2006_79_kernel.html
http://www.redhat.com/support/errata/RHSA-2006-0710.html
http://www.us.debian.org/security/2006/dsa-1233
Published: 2006-10-10
Base Score: 2.1
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N
Severity: Low