|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.|
|Source||CVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)|
|NVD severity||low (attack range: local)|
|Debian/stable||not known to be vulnerable.|
|Debian/testing||not known to be vulnerable.|
|Debian/unstable||not known to be vulnerable.|
Vulnerable and fixed packages
The table below lists information on source packages.
|linux-2.6 (PTS)||squeeze (security), squeeze||2.6.32-48squeeze6||fixed|
The information above is based on the following data on fixed versions.
s390 only, fix in 2.6.18-3 was reverted in 2.6.18-4