cve-2021-47169
Vulnerability from cvelistv5
Published
2024-03-25 09:16
Modified
2024-11-04 12:00
Severity ?
Summary
serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/016002848c82eeb5d460489ce392d91fe18c475c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1cc57cb32c84e059bd158494f746b665fc14d1b1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1e04d5d5fe5e76af68f834e1941fcbfa439653be
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35265552c7fe9553c75e324c80f45e28ff14eb6e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a931ceb0b9401fe18d0c500e08164bf9cc7be4b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/915452f40e2f495e187276c4407a4f567ec2307e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9b07b6973f7359e2dd6a9fe6db0c142634c823b7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c697244ce940ec07e2d745ccb63ca97fc0266fbc
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: rp2: use \u0027request_firmware\u0027 instead of \u0027request_firmware_nowait\u0027\n\nIn \u0027rp2_probe\u0027, the driver registers \u0027rp2_uart_interrupt\u0027 then calls\n\u0027rp2_fw_cb\u0027 through \u0027request_firmware_nowait\u0027. In \u0027rp2_fw_cb\u0027, if the\nfirmware don\u0027t exists, function just return without initializing ports\nof \u0027rp2_card\u0027. But now the interrupt handler function has been\nregistered, and when an interrupt comes, \u0027rp2_uart_interrupt\u0027 may access\nthose ports then causing NULL pointer dereference or other bugs.\n\nBecause the driver does some initialization work in \u0027rp2_fw_cb\u0027, in\norder to make the driver ready to handle interrupts, \u0027request_firmware\u0027\nshould be used instead of asynchronous \u0027request_firmware_nowait\u0027.\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 \u003cIRQ\u003e\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 \u003c/IRQ\u003e\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 \u003c5d\u003e 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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      "title": "serial: rp2: use \u0027request_firmware\u0027 instead of \u0027request_firmware_nowait\u0027",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47169",
    "datePublished": "2024-03-25T09:16:21.589Z",
    "dateReserved": "2024-03-25T09:12:14.111Z",
    "dateUpdated": "2024-11-04T12:00:45.155Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47169\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-25T10:15:08.820\",\"lastModified\":\"2024-03-25T13:47:14.087\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nserial: rp2: use \u0027request_firmware\u0027 instead of \u0027request_firmware_nowait\u0027\\n\\nIn \u0027rp2_probe\u0027, the driver registers \u0027rp2_uart_interrupt\u0027 then calls\\n\u0027rp2_fw_cb\u0027 through \u0027request_firmware_nowait\u0027. In \u0027rp2_fw_cb\u0027, if the\\nfirmware don\u0027t exists, function just return without initializing ports\\nof \u0027rp2_card\u0027. But now the interrupt handler function has been\\nregistered, and when an interrupt comes, \u0027rp2_uart_interrupt\u0027 may access\\nthose ports then causing NULL pointer dereference or other bugs.\\n\\nBecause the driver does some initialization work in \u0027rp2_fw_cb\u0027, in\\norder to make the driver ready to handle interrupts, \u0027request_firmware\u0027\\nshould be used instead of asynchronous \u0027request_firmware_nowait\u0027.\\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 \u003cIRQ\u003e\\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 \u003c/IRQ\u003e\\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 \u003c5d\u003e 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---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: serial: rp2: use \u0027request_firmware\u0027 en lugar de \u0027request_firmware_nowait\u0027 En \u0027rp2_probe\u0027, el controlador registra \u0027rp2_uart_interrupt\u0027 y luego llama a \u0027rp2_fw_cb\u0027 a trav\u00e9s de \u0027request_firmware_nowait\u0027. En \u0027rp2_fw_cb\u0027, si el firmware no existe, la funci\u00f3n simplemente regresa sin inicializar los puertos de \u0027rp2_card\u0027. Pero ahora la funci\u00f3n de manejo de interrupciones ha sido registrada, y cuando llega una interrupci\u00f3n, \u0027rp2_uart_interrupt\u0027 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 \u0027rp2_fw_cb\u0027, para que el controlador est\u00e9 listo para manejar interrupciones, se debe usar \u0027request_firmware\u0027 en lugar de \u0027request_firmware_nowait\u0027 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 \u0026lt; /IRQ\u0026gt; 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 \u0026lt;5d\u0026gt; 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---\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/016002848c82eeb5d460489ce392d91fe18c475c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1cc57cb32c84e059bd158494f746b665fc14d1b1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1e04d5d5fe5e76af68f834e1941fcbfa439653be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/35265552c7fe9553c75e324c80f45e28ff14eb6e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6a931ceb0b9401fe18d0c500e08164bf9cc7be4b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/915452f40e2f495e187276c4407a4f567ec2307e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9b07b6973f7359e2dd6a9fe6db0c142634c823b7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c697244ce940ec07e2d745ccb63ca97fc0266fbc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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