Vulnerabilidad en kernel de Linux (CVE-2024-43878)

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xfrm: corrige el error de acceso a la memoria de la ruta de entrada Cuando hay una mala configuración del estado de entrada, la ruta lenta KASAN informa el error. Corrija este error. inicio de sesión oeste: [52.987278] eth1: renombrado de veth11 [53.078814] eth1: renombrado de veth21 [53.181355] eth1: renombrado de veth31 [54.921702] ===================== =============================================== [ 54.922602] ERROR : KASAN: acceso a memoria salvaje en xfrmi_rcv_cb+0x2d/0x295 [ 54.923393] Lectura de tamaño 8 en la dirección 6b6b6b6b00000000 mediante tarea ping/512 [ 54.924169] [ 54.924386] CPU: 0 PID: 512 Comm: ping No contaminado 6. 9.0- 08574-gcd29a4313a1b #25 [ 54.925290] Nombre de hardware: PC estándar QEMU (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 01/04/2014 [ 54.926401] Seguimiento de llamadas: [ 54.926731] [54.927009] dump_stack_lvl+0x2a/0x3b [54.927478] kasan_report+0x84/0xa6 [54.927930]? xfrmi_rcv_cb+0x2d/0x295 [ 54.928410] xfrmi_rcv_cb+0x2d/0x295 [ 54.928872] ? xfrm4_rcv_cb+0x3d/0x5e [ 54.929354] xfrm4_rcv_cb+0x46/0x5e [ 54.929804] xfrm_rcv_cb+0x7e/0xa1 [ 54.930240] xfrm_input+0x1b3a/0x1b96 [ 54.930715] ? xfrm_offload+0x41/0x41 [54.931182]? raw_rcv+0x292/0x292 [54.931617]? nf_conntrack_confirm+0xa2/0xa2 [54.932158]? skb_sec_path+0xd/0x3f [54.932610]? xfrmi_input+0x90/0xce [ 54.933066] xfrm4_esp_rcv+0x33/0x54 [ 54.933521] ip_protocol_deliver_rcu+0xd7/0x1b2 [ 54.934089] ip_local_deliver_finish+0x110/0x120 [ 54.93 4659] ? ip_protocol_deliver_rcu+0x1b2/0x1b2 [ 54.935248] NF_HOOK.constprop.0+0xf8/0x138 [ 54.935767] ? ip_sublist_rcv_finish+0x68/0x68 [54.936317]? ¿secure_tcpv6_ts_off+0x23/0x168 [54.936859]? ip_protocol_deliver_rcu+0x1b2/0x1b2 [54.937454]? __xfrm_policy_check2.constprop.0+0x18d/0x18d [ 54.938135] NF_HOOK.constprop.0+0xf8/0x138 [ 54.938663] ? ip_sublist_rcv_finish+0x68/0x68 [54.939220]? __xfrm_policy_check2.constprop.0+0x18d/0x18d [54.939904]? ip_local_deliver_finish+0x120/0x120 [ 54.940497] __netif_receive_skb_one_core+0xc9/0x107 [ 54.941121] ? __netif_receive_skb_list_core+0x1c2/0x1c2 [54.941771]? blk_mq_start_stopped_hw_queues+0xc7/0xf9 [54.942413]? blk_mq_start_stopped_hw_queue+0x38/0x38 [54.943044]? virtqueue_get_buf_ctx+0x295/0x46b [ 54.943618] Process_backlog+0xb3/0x187 [ 54.944102] __napi_poll.constprop.0+0x57/0x1a7 [ 54.944669] net_rx_action+0x1cb/0x380 [ 54.94 5150] ? __napi_poll.constprop.0+0x1a7/0x1a7 [54.945744]? vring_new_virtqueue+0x17a/0x17a [54.946300]? note_interrupt+0x2cd/0x367 [ 54.946805] handle_softirqs+0x13c/0x2c9 [ 54.947300] do_softirq+0x5f/0x7d [ 54.947727] [ 54.948014] [ 54.948300] _enable_ip+0x48/0x62 [ 54.948832] __neigh_event_send+0x3fd/0x4ca [ 54.949361] neigh_resolve_output+0x1e/0x210 [ 54.949896] ip_finish_output2+0x4bf/0x4f0 [ 54.950410] ? __ip_finish_output+0x171/0x1b8 [ 54.950956] ip_send_skb+0x25/0x57 [ 54.951390] raw_sendmsg+0xf95/0x10c0 [ 54.951850] ? check_new_pages+0x45/0x71 [ 54.952343] ? raw_hash_sk+0x21b/0x21b [54.952815]? kernel_init_pages+0x42/0x51 [54.953337]? prep_new_page+0x44/0x51 [54.953811]? get_page_from_freelist+0x72b/0x915 [54.954390]? signal_pending_state+0x77/0x77 [54.954936]? preempt_count_sub+0x14/0xb3 [54.955450]? __might_resched+0x8a/0x240 [ 54.955951] ? __might_sleep+0x25/0xa0 [ 54.956424] ? first_zones_zonelist+0x2c/0x43 [ 54.956977] ? __rcu_read_lock+0x2d/0x3a [ 54.957476] ? __pte_offset_map+0x32/0xa4 [54.957980]? __might_resched+0x8a/0x240 [ 54.958483] ? __might_sleep+0x25/0xa0 [ 54.958963] ? inet_send_prepare+0x54/0x54 [54.959478]? sock_sendmsg_nosec+0x42/0x6c [ 54.960000] sock_sendmsg_nosec+0x42/0x6c [ 54.960502] __sys_sendto+0x15d/0x1cc [ 54.960966] ? __x64_sys_getpeername+0x44/0x44 [ 54.961522] ? __handle_mm_fault+0x679/0xae4 [ 54.962068] ? find_vma+0x6b/0x ---truncado---