On Thu, Nov 30, 2017 at 06:16:58AM +0100, Thomas Meyer wrote: > On Thu, Nov 30, 2017 at 11:36:06AM +0800, Fengguang Wu wrote:
> > [ 40.847825] > > ================================================================== > > [ 40.848720] BUG: KASAN: use-after-free in cmp_ex_search+0x29/0x71: > > ex_to_insn at lib/extable.c:23 > > (inlined by) cmp_ex_search at > > lib/extable.c:104 Right after this it does: > [ 40.872223] kernel tried to execute NX-protected page - exploit attempt? > (uid: 0) > [ 40.873011] BUG: unable to handle kernel paging request at fffffbfff0766694 > [ 40.874648] IP: 0xfffffbfff0766694 > [ 40.875112] PGD 1b3df067 P4D 1b3df067 PUD 1b3de067 PMD 800000001ac001e3 > [ 40.876293] Thread overran stack, or stack corrupted which seems to suggest the machine is completely fucked and the uaf could very well be the result of that.
