Hello. We are Ubisectech Sirius Team, the vulnerability lab of China ValiantSec. Recently, our team has discovered a issue in Linux kernel 6.8. Attached to the email were a PoC file of the issue. Stack dump: BUG: TASK stack guard page was hit at ffffc90001b27f88 (stack is ffffc90001b28000..ffffc90001b30000) stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 8069 Comm: syz-executor293 Not tainted 6.8.0 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:mark_lock+0x25/0xd60 kernel/locking/lockdep.c:4639 Code: 90 90 90 90 90 55 48 89 e5 41 57 41 56 41 55 41 54 41 89 d4 48 ba 00 00 00 00 00 fc ff df 53 48 83 e4 f0 48 81 ec 10 01 00 00 <48> c7 44 24 30 b3 8a b5 41 48 8d 5c 24 30 48 c7 44 24 38 00 88 b9 RSP: 0018:ffffc90001b27f90 EFLAGS: 00010086 RAX: 0000000000000004 RBX: ffff888042cd2fa2 RCX: ffff888042cd2f64 RDX: dffffc0000000000 RSI: ffff888042cd2f80 RDI: ffff888042cd24c0 RBP: ffffc90001b280c8 R08: 0000000000000001 R09: fffffbfff2711214 R10: ffffffff938890a7 R11: 0000000000000000 R12: 0000000000000002 R13: 0000000000000000 R14: ffff888042cd24c0 R15: 000000000004073c FS: 00005555558f13c0(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90001b27f88 CR3: 0000000048cb8000 CR4: 0000000000750ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <#DF> </#DF> <TASK> mark_usage kernel/locking/lockdep.c:4587 [inline] __lock_acquire+0x91e/0x3bc0 kernel/locking/lockdep.c:5091 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5719 lock_sock_nested+0x3a/0xf0 net/core/sock.c:3523 lock_sock include/net/sock.h:1691 [inline] vsock_connectible_recvmsg+0xdd/0xba0 net/vmw_vsock/af_vsock.c:2196 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 __vsock_recvmsg net/vmw_vsock/vsock_bpf.c:67 [inline] vsock_bpf_recvmsg+0xb41/0x11a0 net/vmw_vsock/vsock_bpf.c:105 vsock_connectible_recvmsg+0x92b/0xba0 net/vmw_vsock/af_vsock.c:2240 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg+0x1de/0x240 net/socket.c:1068 ____sys_recvmsg+0x216/0x670 net/socket.c:2803 ___sys_recvmsg+0xff/0x190 net/socket.c:2845 __sys_recvmsg+0xfb/0x1d0 net/socket.c:2875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f6c450819cd Code: c3 e8 a7 1f 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcae667888 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000016644 RCX: 00007f6c450819cd RDX: 0000000000000000 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcae66789c R13: 431bde82d7b634db R14: 00007f6c450fe4f0 R15: 0000000000000001 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:mark_lock+0x25/0xd60 kernel/locking/lockdep.c:4639 Code: 90 90 90 90 90 55 48 89 e5 41 57 41 56 41 55 41 54 41 89 d4 48 ba 00 00 00 00 00 fc ff df 53 48 83 e4 f0 48 81 ec 10 01 00 00 <48> c7 44 24 30 b3 8a b5 41 48 8d 5c 24 30 48 c7 44 24 38 00 88 b9 RSP: 0018:ffffc90001b27f90 EFLAGS: 00010086 RAX: 0000000000000004 RBX: ffff888042cd2fa2 RCX: ffff888042cd2f64 RDX: dffffc0000000000 RSI: ffff888042cd2f80 RDI: ffff888042cd24c0 RBP: ffffc90001b280c8 R08: 0000000000000001 R09: fffffbfff2711214 R10: ffffffff938890a7 R11: 0000000000000000 R12: 0000000000000002 R13: 0000000000000000 R14: ffff888042cd24c0 R15: 000000000004073c FS: 00005555558f13c0(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90001b27f88 CR3: 0000000048cb8000 CR4: 0000000000750ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 55 push %rbp 6: 48 89 e5 mov %rsp,%rbp 9: 41 57 push %r15 b: 41 56 push %r14 d: 41 55 push %r13 f: 41 54 push %r12 11: 41 89 d4 mov %edx,%r12d 14: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 1b: fc ff df 1e: 53 push %rbx 1f: 48 83 e4 f0 and $0xfffffffffffffff0,%rsp 23: 48 81 ec 10 01 00 00 sub $0x110,%rsp * 2a: 48 c7 44 24 30 b3 8a movq $0x41b58ab3,0x30(%rsp) <-- trapping instruction 31: b5 41 33: 48 8d 5c 24 30 lea 0x30(%rsp),%rbx 38: 48 rex.W 39: c7 .byte 0xc7 3a: 44 24 38 rex.R and $0x38,%al 3d: 00 .byte 0x0 3e: 88 .byte 0x88 3f: b9 .byte 0xb9 Thank you for taking the time to read this email and we look forward to working with you further.
Attachment:
poc.c
Description: Binary data
