libwmf is a library for reading and converting Windows Metafile Format(WMF) vector graphics. libwmf is used by applications such as GIMP andImageMagick.A pointer use-after-free flaw was found in the GD graphics library embeddedin libwmf. An attacker could create a specially-crafted WMF file that wouldcause an application using libwmf to crash or, potentially, executearbitrary code as the user running the application when opened by a victim.(CVE-2009-1364)Note: This flaw is specific to the GD graphics library embedded in libwmf.It does not affect the GD graphics library from the "gd" packages, orapplications using it.Red Hat would like to thank Tavis Ormandy of the Google Security Team forresponsibly reporting this flaw.All users of libwmf are advised to upgrade to these updated packages, whichcontain a backported patch to correct this issue. After installing theupdate, all applications using libwmf must be restarted for the updateto take effect.