xine-lib is the xine core engine. xine is a free multimedia player. It plays CDs, DVDs, and VCDs, and can also decode other common multimedia formats.
Federico L. Bossi Bonin discovered that when handling MPEG streams xine-lib fails to make a proper boundary check of the input data supplied by the user before copying it to an insufficiently sized memory buffer.
A remote attacker could entice a user to play a specially-crafted MPEG file, resulting in the execution of arbitrary code with the permissions of the user running the application.
There is no known workaround at this time.
All xine-lib users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/xine-lib-1.1.2_pre20060328-r1"