CVE-2024-57948

In the Linux kernel, the following vulnerability has been resolved:

mac802154: check local interfaces before deleting sdata list

syzkaller reported a corrupted list in ieee802154_if_remove. [1]

Remove an IEEE 802.15.4 network interface after unregister an IEEE 802.15.4

hardware device from the system.

CPU0 CPU1

==== ====

genl_family_rcv_msg_doit ieee802154_unregister_hw

ieee802154_del_iface ieee802154_remove_interfaces

rdev_del_virtual_intf_deprecated list_del(&sdata->list)

ieee802154_if_remove

list_del_rcu

The net device has been unregistered, since the rcu grace period,

unregistration must be run before ieee802154_if_remove.

To avoid this issue, add a check for local->interfaces before deleting

sdata list.

[1]

kernel BUG at lib/list_debug.c:58!

Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI

CPU: 0 UID: 0 PID: 6277 Comm: syz-executor157 Not tainted 6.12.0-rc6-syzkaller-00005-g557329bcecc2 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024

RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56

Code: e8 a1 7e 00 07 90 0f 0b 48 c7 c7 e0 37 60 8c 4c 89 fe e8 8f 7e 00 07 90 0f 0b 48 c7 c7 40 38 60 8c 4c 89 fe e8 7d 7e 00 07 90 <0f> 0b 48 c7 c7 a0 38 60 8c 4c 89 fe e8 6b 7e 00 07 90 0f 0b 48 c7

RSP: 0018:ffffc9000490f3d0 EFLAGS: 00010246

RAX: 000000000000004e RBX: dead000000000122 RCX: d211eee56bb28d00

RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000

RBP: ffff88805b278dd8 R08: ffffffff8174a12c R09: 1ffffffff2852f0d

R10: dffffc0000000000 R11: fffffbfff2852f0e R12: dffffc0000000000

R13: dffffc0000000000 R14: dead000000000100 R15: ffff88805b278cc0

FS: 0000555572f94380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 000056262e4a3000 CR3: 0000000078496000 CR4: 00000000003526f0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000

DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Call Trace:

<TASK>

__list_del_entry_valid include/linux/list.h:124 [inline]

__list_del_entry include/linux/list.h:215 [inline]

list_del_rcu include/linux/rculist.h:157 [inline]

ieee802154_if_remove+0x86/0x1e0 net/mac802154/iface.c:687

rdev_del_virtual_intf_deprecated net/ieee802154/rdev-ops.h:24 [inline]

ieee802154_del_iface+0x2c0/0x5c0 net/ieee802154/nl-phy.c:323

genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]

genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]

genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210

netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551

genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219

netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]

netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357

netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901

sock_sendmsg_nosec net/socket.c:729 [inline]

__sock_sendmsg+0x221/0x270 net/socket.c:744

____sys_sendmsg+0x52a/0x7e0 net/socket.c:2607

___sys_sendmsg net/socket.c:2661 [inline]

__sys_sendmsg+0x292/0x380 net/socket.c:2690

do_syscall_x64 arch/x86/entry/common.c:52 [inline]

do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83

entry_SYSCALL_64_after_hwframe+0x77/0x7f