Common Vulnerabilities and Exposures assigned an identifier CVE-2004-2731 to the following vulnerability: Multiple integer overflows in Sbus PROM driver (drivers/sbus/char/openprom.c) for the Linux kernel 2.4.x up to 2.4.27, 2.6.x up to 2.6.7, and possibly later versions, allow local users to execute arbitrary code by specifying (1) a small buffer size to the copyin_string function or (2) a negative buffer size to the copyin function. References: http://archives.neohapsis.com/archives/bugtraq/2004-06/0463.html
Not vulnerable. Linux kernel as shipped with with Red Hat Enterprise Linux 2.1, 3, 4 or 5 did not include the Sbus PROM module and therefore are not affected by this issue.