There are use-after-free vulnerabilities in drivers/net/hamradio/6pack.c of linux that allow attacker to crash linux kernel by simulating Amateur Radio from user-space. Upstream fix: https://github.com/torvalds/linux/commit/efe4186e6a1b54bf38b9e05450d43b0da1fd7739
*** This bug has been marked as a duplicate of bug 2070689 ***