"value":"In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Fix NULL pointer dereference in tb_port_update_credits()\n\nOlliver reported that his system crashes when plugging in Thunderbolt 1\ndevice:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000020\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP NOPTI\n RIP: 0010:tb_port_do_update_credits+0x1b/0x130 [thunderbolt]\n Call Trace:\n <TASK>\n ? __die+0x23/0x70\n ? page_fault_oops+0x171/0x4e0\n ? exc_page_fault+0x7f/0x180\n ? asm_exc_page_fault+0x26/0x30\n ? tb_port_do_update_credits+0x1b/0x130\n ? tb_switch_update_link_attributes+0x83/0xd0\n tb_switch_add+0x7a2/0xfe0\n tb_scan_port+0x236/0x6f0\n tb_handle_hotplug+0x6db/0x900\n process_one_work+0x171/0x340\n worker_thread+0x27b/0x3a0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe5/0x120\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x31/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n </TASK>\n\nThis is due the fact that some Thunderbolt 1 devices only have one lane\nadapter. Fix this by checking for the lane 1 before we read its credits."
"value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Thunderbolt: corrige la desreferencia del puntero NULL en tb_port_update_credits() Olliver inform\u00f3 que su sistema falla al conectar el dispositivo Thunderbolt 1: ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000020 #PF: supervisor le\u00eddo acceso en modo kernel #PF: error_code(0x0000) - p\u00e1gina no presente PGD 0 P4D 0 Vaya: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:tb_port_do_update_credits+0x1b/0x130 [thunderbolt] Seguimiento de llamadas: ? __morir+0x23/0x70 ? page_fault_oops+0x171/0x4e0? exc_page_fault+0x7f/0x180? asm_exc_page_fault+0x26/0x30? tb_port_do_update_credits+0x1b/0x130 ? tb_switch_update_link_attributes+0x83/0xd0 tb_switch_add+0x7a2/0xfe0 tb_scan_port+0x236/0x6f0 tb_handle_hotplug+0x6db/0x900 Process_one_work+0x171/0x340 Workers_thread+0x27b/0x3a0 ? __pfx_worker_thread+0x10/0x10 kthread+0xe5/0x120 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x31/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30 Esto se debe al hecho de que algunos dispositivos Thunderbolt 1 solo tienen un adaptador de l\u00ednea. Solucione este problema comprobando el carril 1 antes de leer sus cr\u00e9ditos."