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UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan

Status: upstream: reported C repro on 2025/04/28 19:05
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+4bcdddd48bb6f0be0da1@syzkaller.appspotmail.com
Fix commit: 82bbe02b2500 wifi: mac80211: Set n_channels after allocating struct cfg80211_scan_request
Patched on: [ci-qemu-gce-upstream-auto ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-snapshot-upstream-root ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-arm64 ci-upstream-gce-leak ci-upstream-kasan-badwrites-root 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-386-root ci-upstream-kmsan-gce-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci-upstream-rust-kasan-gce ci2-upstream-fs ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu-native-arm64-kvm]
First crash: 64d, last: 1h16m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[PATCH] wifi: mac80211: Set n_channels after allocating struct cfg80211_scan_request 2 (2) 2025/05/09 19:10
[syzbot] [wireless?] UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan 8 (16) 2025/05/09 18:35
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan 3 1d07h 8d18h 0/2 upstream: reported on 2025/06/19 16:46
▶ ▼ Last patch testing requests (7)
Created Duration User Patch Repo Result
2025/05/07 13:28 14m eadavis@qq.com patch upstream report log
2025/05/07 11:30 14m eadavis@qq.com patch upstream report log
2025/04/30 10:13 20m eadavis@qq.com patch upstream OK log
2025/04/29 10:58 19m eadavis@qq.com patch upstream OK log
2025/04/29 10:23 8m eadavis@qq.com patch upstream error
2025/04/29 08:45 14m eadavis@qq.com patch upstream report log
2025/04/29 02:39 15m eadavis@qq.com patch upstream report log

Sample crash report:
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan1: Trigger new scan to find an IBSS to join
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in net/mac80211/scan.c:1208:5
index 0 is out of range for type 'struct ieee80211_channel *[] __counted_by(n_channels)' (aka 'struct ieee80211_channel *[]')
CPU: 0 UID: 0 PID: 131 Comm: kworker/u4:5 Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 ubsan_epilogue+0xa/0x40 lib/ubsan.c:231
 __ubsan_handle_out_of_bounds+0xe9/0xf0 lib/ubsan.c:453
 ieee80211_request_ibss_scan+0x600/0x8b0 net/mac80211/scan.c:1208
 ieee80211_sta_find_ibss net/mac80211/ibss.c:-1 [inline]
 ieee80211_ibss_work+0xde7/0x1060 net/mac80211/ibss.c:1670
 cfg80211_wiphy_work+0x2dc/0x460 net/wireless/core.c:435
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
---[ end trace ]---
Kernel panic - not syncing: UBSAN: panic_on_warn set ...
CPU: 0 UID: 0 PID: 131 Comm: kworker/u4:5 Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x99/0x250 lib/dump_stack.c:120
 panic+0x2db/0x790 kernel/panic.c:354
 check_panic_on_warn+0x89/0xb0 kernel/panic.c:243
 __ubsan_handle_out_of_bounds+0xe9/0xf0 lib/ubsan.c:453
 ieee80211_request_ibss_scan+0x600/0x8b0 net/mac80211/scan.c:1208
 ieee80211_sta_find_ibss net/mac80211/ibss.c:-1 [inline]
 ieee80211_ibss_work+0xde7/0x1060 net/mac80211/ibss.c:1670
 cfg80211_wiphy_work+0x2dc/0x460 net/wireless/core.c:435
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (29483):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/04/27 05:05 upstream 5bc1018675ec c6b4fb39 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/04/27 08:06 net f73f05c6f711 c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/04/27 04:19 net-next cc17b4b9c332 c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/05/14 08:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c32f8dc5aaf9 7344edeb .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/26 22:00 upstream e34a79b96ab9 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/25 22:49 upstream 92ca6c498a5e 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/25 12:06 upstream 7595b66ae9de 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 01:57 upstream 3f75bfff44be d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/18 13:23 upstream 52da431bf03b ca631f70 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/05/14 08:41 upstream 9f35e33144ae 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/05/07 20:15 upstream 707df3375124 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/28 09:50 net 8550821a1535 fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/28 03:47 net 8550821a1535 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/27 12:25 net e34a79b96ab9 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/27 10:22 bpf e34a79b96ab9 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/27 00:46 net e34a79b96ab9 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/26 17:56 net 8d89661a36dd 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/26 16:28 bpf ee88bddf7f2f 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/26 15:37 bpf ee88bddf7f2f 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/26 12:38 net 8d89661a36dd 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/26 03:21 net 010c40c1f50e 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/25 17:52 bpf 190113989ae0 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/25 14:19 bpf 190113989ae0 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/25 10:12 net 9caca6ac0e26 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/24 23:05 net 1fd26729e013 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/24 06:49 net 95b6759a8183 1a7fb460 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/23 14:15 net b993ea46b3b6 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/23 13:10 net b993ea46b3b6 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/23 03:15 net 302251f1fdfd d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 17:37 net 714db279942b d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 12:24 net 714db279942b d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 10:44 net 714db279942b d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 09:10 net 714db279942b d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 05:30 net 714db279942b d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 03:26 net 714db279942b d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 00:22 net 714db279942b d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/28 07:57 bpf-next bacdf5a0e69d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/28 06:18 bpf-next bacdf5a0e69d fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/28 05:05 net-next f22e6fdf7b33 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/27 13:45 net-next 8efa26fcbf8a 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/27 08:40 bpf-next 6def0822d211 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/27 06:34 bpf-next 6def0822d211 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/27 04:18 bpf-next 6def0822d211 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/25 19:30 bpf-next 3713b584dabb 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/24 03:53 bpf-next c11f34e30088 1a7fb460 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 23:38 bpf-next 99fe8af069a9 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/22 20:18 bpf-next 99fe8af069a9 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/27 18:24 linux-next 2aeda9592360 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/26 19:49 linux-next ecb259c4f70d 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/26 11:33 linux-next ecb259c4f70d 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/26 10:18 linux-next ecb259c4f70d 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/25 00:17 linux-next 2ae2aaafb214 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/24 17:40 linux-next 2ae2aaafb214 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/24 14:17 linux-next 2ae2aaafb214 e2f27c35 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/24 12:54 linux-next 2ae2aaafb214 e2f27c35 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/23 22:34 linux-next f817b6dd2b62 1a7fb460 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/23 20:41 linux-next f817b6dd2b62 1a7fb460 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
2025/06/25 03:27 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 9aa9b43d689e 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 UBSAN: array-index-out-of-bounds in ieee80211_request_ibss_scan
* Struck through repros no longer work on HEAD.