syzbot


KASAN: use-after-free Read in ieee80211_ibss_build_presp
Status: upstream: reported C repro on 2020/12/07 19:03
Reported-by: syzbot+cd25350b5fe5b8ed143c@syzkaller.appspotmail.com
First crash: 231d, last: 121d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) [no-op commit]:
commit 7aae5432ac61ffae3e5afadbd2713bb73177f11d
Author: Chris Chiu <chris.chiu@canonical.com>
Date: Thu Mar 25 14:04:19 2021 +0000

  mailmap: update the email address for Chris Chiu

similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 KASAN: use-after-free Read in ieee80211_ibss_build_presp C done 2 122d 268d 1/1 fixed on 2021/04/22 23:33
linux-4.19 KASAN: use-after-free Read in ieee80211_ibss_build_presp C 1 2d15h 259d 0/1 upstream: reported C repro on 2020/11/07 02:41

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/03/24 20:26 upstream 7acac4b3196c 607e3baf .config log report syz C KASAN: use-after-free Read in ieee80211_ibss_build_presp
ci-upstream-kasan-gce-smack-root 2021/02/04 22:48 upstream 61556703b610 42b90a7c .config log report syz C KASAN: use-after-free Read in ieee80211_ibss_build_presp
ci-upstream-kasan-gce 2020/12/05 03:34 upstream e87297fa080a 20366b87 .config log report syz C