syzbot


KASAN: use-after-free Write in __alloc_skb
Status: fixed on 2020/02/14 21:56
Reported-by: syzbot+8c710373724f6ea5edfd@syzkaller.appspotmail.com
Fix commit: e841252840c4 net: rtnetlink: validate IFLA_MTU attribute in rtnl_create_link()
First crash: 672d, last: 642d

Fix bisection: fixed by (bisect log) :
commit e841252840c48e9a0e5add9d82796b1d55c0f653
Author: Eric Dumazet <edumazet@google.com>
Date: Wed Jan 22 06:47:29 2020 +0000

  net: rtnetlink: validate IFLA_MTU attribute in rtnl_create_link()

similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: use-after-free Write in __alloc_skb C done 2 642d 710d 1/1 fixed on 2020/02/11 15:16
upstream KASAN: use-after-free Write in __alloc_skb (3) C done inconclusive 2 74d 443d 0/22 upstream: reported C repro on 2020/07/29 18:24
upstream KASAN: use-after-free Write in __alloc_skb (2) C done 7 656d 672d 16/22 fixed on 2020/02/18 14:31
linux-4.14 KASAN: use-after-free Write in __alloc_skb (2) C 1 23d 448d 0/1 upstream: reported C repro on 2020/07/24 01:04
upstream KASAN: use-after-free Write in __alloc_skb 2 697d 702d 0/22 closed as invalid on 2019/12/08 05:44

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2019/12/13 10:42 linux-4.14.y a844dc4c5442 2a752b7c .config log report syz C