The tcpmssmanglepacket function in net/netfilter/xtTCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xtTCPMSS in an iptables action.

Quickly plugging in and unplugging a USB hub can lead to a null pointer dereference in kernel (local denial of service) or the USB port to which the hub is connected becomes unusable, for kernel versions 2.6.32 < 4.4. The issue occurs when the USB hub gets disconnected before or while the routine for USB hub activation is running - hubactivate() function.

Upstream patch:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e50293ef9775c5

External references:

http://www.spinics.net/lists/linux-usb/msg132311.html

CVE-ID request and assignment:

http://seclists.org/oss-sec/2016/q1/404

http://seclists.org/oss-sec/2016/q1/413