drivers/net/usb/pegasus.c in the Linux kernel 4.9.x before 4.9.11 interacts incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service (system crash or memory corruption) or possibly have unspecified other impact by leveraging use of more than one virtual page for a DMA scatterlist.
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11
www.openwall.com/lists/oss-security/2017/04/16/4
www.securityfocus.com/bid/98000
www.securityfocus.com/bid/98008
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5593523f968bc86d42a035c6df47d5e0979b5ace
github.com/torvalds/linux/commit/5593523f968bc86d42a035c6df47d5e0979b5ace