CVE-2025-40238

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net/mlx5: Fix IPsec cleanup over MPV device<br /> <br /> When we do mlx5e_detach_netdev() we eventually disable blocking events<br /> notifier, among those events are IPsec MPV events from IB to core.<br /> <br /> So before disabling those blocking events, make sure to also unregister<br /> the devcom device and mark all this device operations as complete,<br /> in order to prevent the other device from using invalid netdev<br /> during future devcom events which could cause the trace below.<br /> <br /> BUG: kernel NULL pointer dereference, address: 0000000000000010<br /> PGD 146427067 P4D 146427067 PUD 146488067 PMD 0<br /> Oops: Oops: 0000 [#1] SMP<br /> CPU: 1 UID: 0 PID: 7735 Comm: devlink Tainted: GW 6.12.0-rc6_for_upstream_min_debug_2024_11_08_00_46 #1<br /> Tainted: [W]=WARN<br /> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014<br /> RIP: 0010:mlx5_devcom_comp_set_ready+0x5/0x40 [mlx5_core]<br /> Code: 00 01 48 83 05 23 32 1e 00 01 41 b8 ed ff ff ff e9 60 ff ff ff 48 83 05 00 32 1e 00 01 eb e3 66 0f 1f 44 00 00 0f 1f 44 00 00 8b 47 10 48 83 05 5f 32 1e 00 01 48 8b 50 40 48 85 d2 74 05 40<br /> RSP: 0018:ffff88811a5c35f8 EFLAGS: 00010206<br /> RAX: ffff888106e8ab80 RBX: ffff888107d7e200 RCX: ffff88810d6f0a00<br /> RDX: ffff88810d6f0a00 RSI: 0000000000000001 RDI: 0000000000000000<br /> RBP: ffff88811a17e620 R08: 0000000000000040 R09: 0000000000000000<br /> R10: ffff88811a5c3618 R11: 0000000de85d51bd R12: ffff88811a17e600<br /> R13: ffff88810d6f0a00 R14: 0000000000000000 R15: ffff8881034bda80<br /> FS: 00007f27bdf89180(0000) GS:ffff88852c880000(0000) knlGS:0000000000000000<br /> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> CR2: 0000000000000010 CR3: 000000010f159005 CR4: 0000000000372eb0<br /> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br /> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400<br /> Call Trace:<br /> <br /> ? __die+0x20/0x60<br /> ? page_fault_oops+0x150/0x3e0<br /> ? exc_page_fault+0x74/0x130<br /> ? asm_exc_page_fault+0x22/0x30<br /> ? mlx5_devcom_comp_set_ready+0x5/0x40 [mlx5_core]<br /> mlx5e_devcom_event_mpv+0x42/0x60 [mlx5_core]<br /> mlx5_devcom_send_event+0x8c/0x170 [mlx5_core]<br /> blocking_event+0x17b/0x230 [mlx5_core]<br /> notifier_call_chain+0x35/0xa0<br /> blocking_notifier_call_chain+0x3d/0x60<br /> mlx5_blocking_notifier_call_chain+0x22/0x30 [mlx5_core]<br /> mlx5_core_mp_event_replay+0x12/0x20 [mlx5_core]<br /> mlx5_ib_bind_slave_port+0x228/0x2c0 [mlx5_ib]<br /> mlx5_ib_stage_init_init+0x664/0x9d0 [mlx5_ib]<br /> ? idr_alloc_cyclic+0x50/0xb0<br /> ? __kmalloc_cache_noprof+0x167/0x340<br /> ? __kmalloc_noprof+0x1a7/0x430<br /> __mlx5_ib_add+0x34/0xd0 [mlx5_ib]<br /> mlx5r_probe+0xe9/0x310 [mlx5_ib]<br /> ? kernfs_add_one+0x107/0x150<br /> ? __mlx5_ib_add+0xd0/0xd0 [mlx5_ib]<br /> auxiliary_bus_probe+0x3e/0x90<br /> really_probe+0xc5/0x3a0<br /> ? driver_probe_device+0x90/0x90<br /> __driver_probe_device+0x80/0x160<br /> driver_probe_device+0x1e/0x90<br /> __device_attach_driver+0x7d/0x100<br /> bus_for_each_drv+0x80/0xd0<br /> __device_attach+0xbc/0x1f0<br /> bus_probe_device+0x86/0xa0<br /> device_add+0x62d/0x830<br /> __auxiliary_device_add+0x3b/0xa0<br /> ? auxiliary_device_init+0x41/0x90<br /> add_adev+0xd1/0x150 [mlx5_core]<br /> mlx5_rescan_drivers_locked+0x21c/0x300 [mlx5_core]<br /> esw_mode_change+0x6c/0xc0 [mlx5_core]<br /> mlx5_devlink_eswitch_mode_set+0x21e/0x640 [mlx5_core]<br /> devlink_nl_eswitch_set_doit+0x60/0xe0<br /> genl_family_rcv_msg_doit+0xd0/0x120<br /> genl_rcv_msg+0x180/0x2b0<br /> ? devlink_get_from_attrs_lock+0x170/0x170<br /> ? devlink_nl_eswitch_get_doit+0x290/0x290<br /> ? devlink_nl_pre_doit_port_optional+0x50/0x50<br /> ? genl_family_rcv_msg_dumpit+0xf0/0xf0<br /> netlink_rcv_skb+0x54/0x100<br /> genl_rcv+0x24/0x40<br /> netlink_unicast+0x1fc/0x2d0<br /> netlink_sendmsg+0x1e4/0x410<br /> __sock_sendmsg+0x38/0x60<br /> ? sockfd_lookup_light+0x12/0x60<br /> __sys_sendto+0x105/0x160<br /> ? __sys_recvmsg+0x4e/0x90<br /> __x64_sys_sendto+0x20/0x30<br /> do_syscall_64+0x4c/0x100<br /> entry_SYSCALL_64_after_hwframe+0x4b/0x53<br /> RIP: 0033:0x7f27bc91b13a<br /> Code: bb 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 8b 05 fa 96 2c 00 45 89 c9 4c 63 d1 48 63 ff 85 c0 75 15 b8 2c 00 00 00 0f 05 3d 00 f0 ff ff <br /> ---truncated---