The MITRE CVE dictionary describes this issue as:
Stack-based buffer overflow in the errprintf function in base/gsmisc.c in ghostscript 8.64 through 8.70 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted PDF file, as originally reported for debug logging code in gdevcups.c in the CUPS output driver.
Find out more about CVE-2009-4270 from the
MITRE CVE dictionary dictionary and
Not vulnerable. This issue did not affect the versions of ghostscript as shipped with Red Hat Enterprise Linux 3, 4, or 5.