syzbot


KMSAN: kernel-infoleak in move_addr_to_user (5)
Status: internal: reported on 2021/03/12 14:57
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 50535249f624 net: qrtr: fix a kernel-infoleak in qrtr_recvmsg()
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-arm32]
First crash: 141d, last: 116d
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: kernel-infoleak in move_addr_to_user (3) C 79 318d 352d 17/22 fixed on 2020/09/28 09:09
upstream KMSAN: kernel-infoleak in move_addr_to_user (2) C 8 857d 872d 12/22 fixed on 2019/03/28 12:00
upstream KMSAN: kernel-infoleak in move_addr_to_user (4) C 59 150d 202d 21/22 fixed on 2021/03/10 01:48
upstream KMSAN: kernel-infoleak in move_addr_to_user 5 885d 935d 12/22 fixed on 2019/03/06 07:43

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kmsan-gce 2021/03/12 13:59 https://github.com/google/kmsan.git master 29ad81a1074a 429d8a6b .config log report info KMSAN: kernel-infoleak in move_addr_to_user
ci-upstream-kmsan-gce-386 2021/04/06 12:53 https://github.com/google/kmsan.git master 29ad81a1074a 6a81331a .config log report info KMSAN: kernel-infoleak in move_addr_to_user