The MITRE CVE dictionary describes this issue as:
Linux kernel before 126.96.36.199 and 2.6.17, when running on PowerPC, does not perform certain required access_ok checks, which allows local users to read arbitrary kernel memory on 64-bit systems (signal_64.c) and cause a denial of service (crash) and possibly read kernel memory on 32-bit systems (signal_32.c).
Red Hat security errata
|Red Hat Enterprise Linux version 4 (kernel)||RHSA-2006:0575||August 10, 2006|
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