syzbot


KASAN: use-after-free Read in ieee80211_ibss_build_presp
Status: fixed on 2021/04/22 23:33
Reported-by: syzbot+11659667bfe36d2e7868@syzkaller.appspotmail.com
Fix commit: d2ddd541 mac80211: fix double free in ibss_leave
First crash: 198d, last: 52d

Fix bisection: fixed by (bisect log) :
commit d2ddd5417f6d5be4421068434408e716787cf1b3
Author: Markus Theil <markus.theil@tu-ilmenau.de>
Date: Sat Feb 13 13:36:53 2021 +0000

  mac80211: fix double free in ibss_leave

similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: use-after-free Read in ieee80211_ibss_build_presp C 1 23d 189d 0/1 upstream: reported C repro on 2020/11/07 02:41
upstream KASAN: use-after-free Read in ieee80211_ibss_build_presp C inconclusive unreliable 3 51d 158d 0/22 upstream: reported C repro on 2020/12/07 19:03

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/11/08 23:20 linux-4.14.y 6b6446ef cba33199 .config log report syz C
ci2-linux-4-14 2020/10/28 16:05 linux-4.14.y 5b7a52cd 96e03c1c .config log report syz C