general protection fault in dev_get_by_index

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision	Error
8b5f3a0b	assessment-security	DenialOfService: ✅ Exploitable: ✅ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ✅ VMGuestTrigger: ❌ VMHostTrigger: ❌	❓	general protection fault in dev_get_by_index_rcu (3)	2026/07/29 00:00	2026/07/29 00:00	2026/07/29 00:55	7be3c40b

Kernel	Title	Rank 🛈	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in dev_get_by_index_rcu (2) bpf net	2	syz, C	error	18	1669d	1669d	20/29	fixed on 2022/03/08 16:11
upstream	general protection fault in dev_get_by_index_rcu net	2			6	2598d	2720d	0/29	auto-closed as invalid on 2019/10/25 08:51
android-5-10	KASAN: use-after-free Read in dev_get_by_index_rcu	19			1	752d	752d	0/2	auto-obsoleted due to no activity on 2024/10/10 04:32

Kernel

Title

Rank 🛈

upstream

general protection fault in dev_get_by_index_rcu (2) bpf net

syz, C

error

1669d

20/29

fixed on 2022/03/08 16:11

upstream

general protection fault in dev_get_by_index_rcu net

2598d

2720d

0/29

auto-closed as invalid on 2019/10/25 08:51

android-5-10

KASAN: use-after-free Read in dev_get_by_index_rcu

752d

0/2

auto-obsoleted due to no activity on 2024/10/10 04:32

Oops: general protection fault, probably for non-canonical address 0xee000d100251a81c: 0000 [#1] SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0x70008880128d40e0-0x70008880128d40e7] CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:dev_get_by_index_rcu+0x7d/0x110 net/core/dev.c:988 Code: 00 74 08 4c 89 ff e8 b2 68 93 f8 4d 8b 37 4d 85 f6 74 7c 49 81 c6 a8 fa ff ff 74 73 4d 8d be e0 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 75 45 41 8b 2f 89 ef 89 de e8 5e 3c 24 f8 39 RSP: 0018:ffffc9000025f2b0 EFLAGS: 00010202 RAX: 0e0011100251a81c RBX: 0000000000000034 RCX: ffff88801cedca80 RDX: 0000000000000000 RSI: 0000000000000034 RDI: ffff888012690000 RBP: 0000000000000034 R08: ffffffff8bb59ef6 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8eb59c60 R12: dffffc0000000000 R13: ffffffff8bb59ef6 R14: 70008880128d4000 R15: 70008880128d40e0 FS: 0000000000000000(0000) GS:ffff88808c543000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fecbc458230 CR3: 0000000050207000 CR4: 0000000000352ef0 Call Trace: <TASK> l3mdev_update_flow+0xf8/0x610 net/l3mdev/l3mdev.c:278 ip6mr_fib_lookup net/ipv6/ip6mr.c:152 [inline] mroute6_is_socket+0x1f0/0x370 net/ipv6/ip6mr.c:1697 ip6_finish_output2+0x641/0x13c0 net/ipv6/ip6_output.c:85 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x292/0x770 net/ipv6/ip6_output.c:219 NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip6_output+0x337/0x540 net/ipv6/ip6_output.c:246 dst_output include/net/dst.h:471 [inline] NF_HOOK+0x177/0x4f0 include/linux/netfilter.h:318 mld_sendpack+0x890/0xe10 net/ipv6/mcast.c:1869 ipv6_mc_dad_complete+0x87/0x410 net/ipv6/mcast.c:2295 addrconf_dad_completed+0x8af/0xe60 net/ipv6/addrconf.c:4375 addrconf_dad_work+0xcf8/0x15c0 net/ipv6/addrconf.c:-1 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dev_get_by_index_rcu+0x7d/0x110 net/core/dev.c:988 Code: 00 74 08 4c 89 ff e8 b2 68 93 f8 4d 8b 37 4d 85 f6 74 7c 49 81 c6 a8 fa ff ff 74 73 4d 8d be e0 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 75 45 41 8b 2f 89 ef 89 de e8 5e 3c 24 f8 39 RSP: 0018:ffffc9000025f2b0 EFLAGS: 00010202 RAX: 0e0011100251a81c RBX: 0000000000000034 RCX: ffff88801cedca80 RDX: 0000000000000000 RSI: 0000000000000034 RDI: ffff888012690000 RBP: 0000000000000034 R08: ffffffff8bb59ef6 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8eb59c60 R12: dffffc0000000000 R13: ffffffff8bb59ef6 R14: 70008880128d4000 R15: 70008880128d40e0 FS: 0000000000000000(0000) GS:ffff88808c543000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fecaf929000 CR3: 0000000043964000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1) 4: 89 ff mov %edi,%edi 6: e8 b2 68 93 f8 call 0xf89368bd b: 4d 8b 37 mov (%r15),%r14 e: 4d 85 f6 test %r14,%r14 11: 74 7c je 0x8f 13: 49 81 c6 a8 fa ff ff add $0xfffffffffffffaa8,%r14 1a: 74 73 je 0x8f 1c: 4d 8d be e0 00 00 00 lea 0xe0(%r14),%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 75 45 jne 0x78 33: 41 8b 2f mov (%r15),%ebp 36: 89 ef mov %ebp,%edi 38: 89 de mov %ebx,%esi 3a: e8 5e 3c 24 f8 call 0xf8243c9d 3f: 39 .byte 0x39

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2026/07/27 14:55	upstream	f5098b6bae76	1f273138	.config	console log	report				[disk image (non-bootable)] [vmlinux] [kernel image]	ci-snapshot-upstream-root	general protection fault in dev_get_by_index_rcu

Crashes (1):

Assets (help?)