Messages in this thread | | | Subject | Re: [PATCH] vgacon: Fix an out-of-bounds in vgacon_scrollback_update() | From | Jiri Slaby <> | Date | Fri, 31 Jul 2020 06:56:14 +0200 |
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Hi,
On 31. 07. 20, 5:23, Yang Yingliang wrote: > void execute_one(void) > { > intptr_t res = 0; > res = syz_open_dev(0xc, 4, 1);
open(/dev/tty1)
> if (res != -1) > r[0] = res; > *(uint16_t*)0x20000000 = 0xc; > *(uint16_t*)0x20000002 = 0x373; > *(uint16_t*)0x20000004 = 0x1442; > syscall(__NR_ioctl, r[0], 0x5609ul, 0x20000000ul);
VT_RESIZE(12, 883)
> memcpy((void*)0x20003500, "\x7f\x45\x4c\x46\x00\x00\x00... > syscall(__NR_write, r[0], 0x20003500ul, 0x381ul);
Write 381 bytes of some ELF to the tty.
OK, that's it. Thanks.
-- js
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