Re: KASAN: use-after-free Read in vgacon_invert_region

2018-05-24 Thread Kyungtae Kim
(We analyzed the crash and added the result below.) We report the crash: "KASAN: use-after-free Read in vgacon_invert_region" This crash was found in v4.17-rc3. Specifically, memory access (read operation) is invalid and which is detected by KASAN. Analysis: The function &qu

KASAN: use-after-free Read in vgacon_invert_region

2018-05-18 Thread Kyungtae Kim
We report the crash: "KASAN: use-after-free Read in vgacon_invert_region" This crash was found in v4.17-rc3. Specifically, memory access (read operation) is invalid, and it is detected by KASAN. C repro code: https://kiwi.cs.purdue.edu/static/alexkkid-fuzzer/repro-ba6c1.c kernel conf