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IEEE 802.11 -- buffer overflow


Problem description:

An integer overflow in the handling of corrupt IEEE 802.11 beacon or probe response frames when scanning for existing wireless networks can result in the frame overflowing a buffer.


An attacker able broadcast a carefully crafted beacon or probe response frame may be able to execute arbitrary code within the context of the FreeBSD kernel on any system scanning for wireless networks.


No workaround is available, but systems without IEEE 802.11 hardware or drivers loaded are not vulnerable.



portaudit: IEEE 802.11 -- buffer overflow

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If you have found a vulnerability in a FreeBSD port not listed in the database, please contact the FreeBSD Security Officer. Refer to "FreeBSD Security Information" for more information.

Oliver Eikemeier <>