CVE-2009-3620: Input Validation

First published: Mon Oct 19 2009(Updated: )

Quoting from the upstream commit: Almost all r128's private ioctls require that the CCE state has already been initialised. However, most do not test that this has been done, and will proceed to dereference a null pointer. This may result in a security vulnerability, since some ioctls are unprivileged. This adds a macro for the common initialisation test and changes all ioctl implementations that require prior initialisation to use that macro. Also, r128_do_init_cce() does not test that the CCE state has not been initialised already. Repeated initialisation may lead to a crash or resource leak. This adds that test. <a href="http://git.kernel.org/linus/7dc482dfeeeefcfd000d4271c4626937406756d7">http://git.kernel.org/linus/7dc482dfeeeefcfd000d4271c4626937406756d7</a> Other references: <a href="http://secunia.com/advisories/36707/">http://secunia.com/advisories/36707/</a>

Credit: secalert@redhat.com secalert@redhat.com

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