mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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243 lines
15 KiB
JSON
243 lines
15 KiB
JSON
{
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"id": "CVE-2021-47169",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-03-25T10:15:08.820",
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"lastModified": "2025-03-03T17:45:46.213",
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"vulnStatus": "Analyzed",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'\n\nIn 'rp2_probe', the driver registers 'rp2_uart_interrupt' then calls\n'rp2_fw_cb' through 'request_firmware_nowait'. In 'rp2_fw_cb', if the\nfirmware don't exists, function just return without initializing ports\nof 'rp2_card'. But now the interrupt handler function has been\nregistered, and when an interrupt comes, 'rp2_uart_interrupt' may access\nthose ports then causing NULL pointer dereference or other bugs.\n\nBecause the driver does some initialization work in 'rp2_fw_cb', in\norder to make the driver ready to handle interrupts, 'request_firmware'\nshould be used instead of asynchronous 'request_firmware_nowait'.\n\nThis report reveals it:\n\nINFO: trying to register non-static key.\nthe code is fine but needs lockdep annotation.\nturning off the locking correctness validator.\nCPU: 2 PID: 0 Comm: swapper/2 Not tainted 4.19.177-gdba4159c14ef-dirty #45\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-\ngc9ba5276e321-prebuilt.qemu.org 04/01/2014\nCall Trace:\n <IRQ>\n __dump_stack lib/dump_stack.c:77 [inline]\n dump_stack+0xec/0x156 lib/dump_stack.c:118\n assign_lock_key kernel/locking/lockdep.c:727 [inline]\n register_lock_class+0x14e5/0x1ba0 kernel/locking/lockdep.c:753\n __lock_acquire+0x187/0x3750 kernel/locking/lockdep.c:3303\n lock_acquire+0x124/0x340 kernel/locking/lockdep.c:3907\n __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]\n _raw_spin_lock+0x32/0x50 kernel/locking/spinlock.c:144\n spin_lock include/linux/spinlock.h:329 [inline]\n rp2_ch_interrupt drivers/tty/serial/rp2.c:466 [inline]\n rp2_asic_interrupt.isra.9+0x15d/0x990 drivers/tty/serial/rp2.c:493\n rp2_uart_interrupt+0x49/0xe0 drivers/tty/serial/rp2.c:504\n __handle_irq_event_percpu+0xfb/0x770 kernel/irq/handle.c:149\n handle_irq_event_percpu+0x79/0x150 kernel/irq/handle.c:189\n handle_irq_event+0xac/0x140 kernel/irq/handle.c:206\n handle_fasteoi_irq+0x232/0x5c0 kernel/irq/chip.c:725\n generic_handle_irq_desc include/linux/irqdesc.h:155 [inline]\n handle_irq+0x230/0x3a0 arch/x86/kernel/irq_64.c:87\n do_IRQ+0xa7/0x1e0 arch/x86/kernel/irq.c:247\n common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:670\n </IRQ>\nRIP: 0010:native_safe_halt+0x28/0x30 arch/x86/include/asm/irqflags.h:61\nCode: 00 00 55 be 04 00 00 00 48 c7 c7 00 c2 2f 8c 48 89 e5 e8 fb 31 e7 f8\n8b 05 75 af 8d 03 85 c0 7e 07 0f 00 2d 8a 61 65 00 fb f4 <5d> c3 90 90 90\n90 90 90 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41\nRSP: 0018:ffff88806b71fcc8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffde\nRAX: 0000000000000000 RBX: ffffffff8bde7e48 RCX: ffffffff88a21285\nRDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8c2fc200\nRBP: ffff88806b71fcc8 R08: fffffbfff185f840 R09: fffffbfff185f840\nR10: 0000000000000001 R11: fffffbfff185f840 R12: 0000000000000002\nR13: ffffffff8bea18a0 R14: 0000000000000000 R15: 0000000000000000\n arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]\n default_idle+0x6f/0x360 arch/x86/kernel/process.c:557\n arch_cpu_idle+0xf/0x20 arch/x86/kernel/process.c:548\n default_idle_call+0x3b/0x60 kernel/sched/idle.c:93\n cpuidle_idle_call kernel/sched/idle.c:153 [inline]\n do_idle+0x2ab/0x3c0 kernel/sched/idle.c:263\n cpu_startup_entry+0xcb/0xe0 kernel/sched/idle.c:369\n start_secondary+0x3b8/0x4e0 arch/x86/kernel/smpboot.c:271\n secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243\nBUG: unable to handle kernel NULL pointer dereference at 0000000000000010\nPGD 8000000056d27067 P4D 8000000056d27067 PUD 56d28067 PMD 0\nOops: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 2 PID: 0 Comm: swapper/2 Not tainted 4.19.177-gdba4159c14ef-dirty #45\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-\ngc9ba5276e321-prebuilt.qemu.org 04/01/2014\nRIP: 0010:readl arch/x86/include/asm/io.h:59 [inline]\nRIP: 0010:rp2_ch_interrupt drivers/tty/serial/rp2.c:472 [inline]\nRIP: 0010:rp2_asic_interrupt.isra.9+0x181/0x990 drivers/tty/serial/rp2.c:\n493\nCo\n---truncated---"
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: serial: rp2: use 'request_firmware' en lugar de 'request_firmware_nowait' En 'rp2_probe', el controlador registra 'rp2_uart_interrupt' y luego llama a 'rp2_fw_cb' a trav\u00e9s de 'request_firmware_nowait'. En 'rp2_fw_cb', si el firmware no existe, la funci\u00f3n simplemente regresa sin inicializar los puertos de 'rp2_card'. Pero ahora la funci\u00f3n de manejo de interrupciones ha sido registrada, y cuando llega una interrupci\u00f3n, 'rp2_uart_interrupt' puede acceder a esos puertos y causar desreferencia al puntero NULL u otros errores. Debido a que el controlador realiza alg\u00fan trabajo de inicializaci\u00f3n en 'rp2_fw_cb', para que el controlador est\u00e9 listo para manejar interrupciones, se debe usar 'request_firmware' en lugar de 'request_firmware_nowait' as\u00edncrono. Este informe lo revela: INFORMACI\u00d3N: intentando registrar una clave no est\u00e1tica. el c\u00f3digo est\u00e1 bien pero necesita una anotaci\u00f3n de bloqueo. apagando el validador de correcci\u00f3n de bloqueo. CPU: 2 PID: 0 Comunicaciones: swapper/2 No contaminado 4.19.177-gdba4159c14ef-dirty #45 Nombre del hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS rel-1.12.0-59- gc9ba5276e321-prebuilt.qemu .org 01/04/2014 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:77 [en l\u00ednea] dump_stack+0xec/0x156 lib/dump_stack.c:118 asignar_lock_key kernel/locking/lockdep.c:727 [en l\u00ednea] Register_lock_class +0x14e5/0x1ba0 kernel/locking/lockdep.c:753 __lock_acquire+0x187/0x3750 kernel/locking/lockdep.c:3303 lock_acquire+0x124/0x340 kernel/locking/lockdep.c:3907 __raw_spin_lock include/linux/spinlock_api_smp.h: 142 [en l\u00ednea] _raw_spin_lock+0x32/0x50 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [en l\u00ednea] rp2_ch_interrupt drivers/tty/serial/rp2.c:466 [en l\u00ednea] rp2_asic_interrupt.isra. 9+0x15d/0x990 controladores/tty/serial/rp2.c:493 rp2_uart_interrupt+0x49/0xe0 controladores/tty/serial/rp2.c:504 __handle_irq_event_percpu+0xfb/0x770 kernel/irq/handle.c:149 handle_irq_event_percpu+0x79/ 0x150 kernel/irq/handle.c:189 handle_irq_event+0xac/0x140 kernel/irq/handle.c:206 handle_fasteoi_irq+0x232/0x5c0 kernel/irq/chip.c:725 generic_handle_irq_desc include/linux/irqdesc.h:155 [en l\u00ednea ] handle_irq+0x230/0x3a0 arch/x86/kernel/irq_64.c:87 do_IRQ+0xa7/0x1e0 arch/x86/kernel/irq.c:247 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:670 < /IRQ> RIP: 0010:native_safe_halt+0x28/0x30 arch/x86/include/asm/irqflags.h:61 C\u00f3digo: 00 00 55 be 04 00 00 00 48 c7 c7 00 c2 2f 8c 48 89 e5 e8 fb 31 e7 f8 8b 05 75 af 8d 03 85 c0 7e 07 0f 00 2d 8a 61 65 00 fb f4 <5d> c3 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 RSP: 00 18:ffff88806b71fcc8 EF BANDERAS: 00000246 ORIG_RAX: ffffffffffffffde RAX: 0000000000000000 RBX: ffffffff8bde7e48 RCX: ffffffff88a21285 RDX: 00000000000000000 RSI: 00000000000000004 RDI: ffffff ff8c2fc200 RBP: ffff88806b71fcc8 R08: ffffbfff185f840 R09: ffffbfff185f840 R10: 00000000000000001 R11: ffffbfff185f840 R12: 0000000000000002 R13: ff ffffff8bea18a0 R14: 0000000000000000 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [en l\u00ednea] default_idle+0x6f/0x360 arch/x86/kernel/process.c:557 arch_cpu_idle+0xf/0x20 arch/x86/kernel/process.c:548 default_idle_call+ 0x3b/0x60 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [en l\u00ednea] do_idle+0x2ab/0x3c0 kernel/sched/idle.c:263 cpu_startup_entry+0xcb/0xe0 kernel/sched/idle. c:369 start_secondary+0x3b8/0x4e0 arch/x86/kernel/smpboot.c:271 second_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 ERROR: no se puede manejar la desreferencia del puntero NULL del kernel en 00000000000000010 PGD 8000000056d270 67 P4D 8000000056d27067 PUD 56d28067 PMD 0 Ups: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 2 PID: 0 Comm: swapper/2 No contaminado 4.19.177-gdba4159c14ef-dirty #45 Nombre de hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009) , BIOS rel-1.12.0-59- gc9ba5276e321-prebuilt.qemu.org 01/04/2014 ---truncado---"
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 5.5,
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"baseSeverity": "MEDIUM",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH"
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},
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"exploitabilityScore": 1.8,
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"impactScore": 3.6
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}
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]
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},
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"weaknesses": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "CWE-476"
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}
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]
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}
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],
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"configurations": [
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"nodes": [
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"operator": "OR",
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"negate": false,
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