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: 137d, last: 27d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config
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 2 28d 174d 0/1 upstream: reported C repro on 2020/10/28 16:05
linux-4.19 KASAN: use-after-free Read in ieee80211_ibss_build_presp C 1 29d 165d 0/1 upstream: reported C repro on 2020/11/07 02:41

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/03/07 03:22 upstream a38fd874 42b90a7c .config log report syz C
ci-upstream-kasan-gce 2021/01/04 03:58 upstream e71ba945 20366b87 .config log report syz C
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 7acac4b3 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 61556703 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 e87297fa 20366b87 .config log report syz C