CVE-2022-49937

Estado: AnalizadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

media: mceusb: Use new usb_control_msg_*() routines

Automatic kernel fuzzing led to a WARN about invalid pipe direction in the mceusb driver:

The reason for the warning is clear enough; the driver sends an unusual read request on endpoint 0 but does not set the USB_DIR_IN bit in the bRequestType field.

More importantly, the whole situation can be avoided and the driver simplified by converting it over to the relatively new usb_control_msg_recv() and usb_control_msg_send() routines. That's what this fix does.

Detalles técnicos trazas, registros y código del informe original

------------[ cut here ]------------
usb 6-1: BOGUS control dir, pipe 80000380 doesn't match bRequestType 40
WARNING: CPU: 0 PID: 2465 at drivers/usb/core/urb.c:410
usb_submit_urb+0x1326/0x1820 drivers/usb/core/urb.c:410
Modules linked in:
CPU: 0 PID: 2465 Comm: kworker/0:2 Not tainted 5.19.0-rc4-00208-g69cb6c6556ad #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.13.0-1ubuntu1.1 04/01/2014
Workqueue: usb_hub_wq hub_event
RIP: 0010:usb_submit_urb+0x1326/0x1820 drivers/usb/core/urb.c:410
Code: 7c 24 40 e8 ac 23 91 fd 48 8b 7c 24 40 e8 b2 70 1b ff 45 89 e8
44 89 f1 4c 89 e2 48 89 c6 48 c7 c7 a0 30 a9 86 e8 48 07 11 02 <0f> 0b
e9 1c f0 ff ff e8 7e 23 91 fd 0f b6 1d 63 22 83 05 31 ff 41
RSP: 0018:ffffc900032becf0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8881100f3058 RCX: 0000000000000000
RDX: ffffc90004961000 RSI: ffff888114c6d580 RDI: fffff52000657d90
RBP: ffff888105ad90f0 R08: ffffffff812c3638 R09: 0000000000000000
R10: 0000000000000005 R11: ffffed1023504ef1 R12: ffff888105ad9000
R13: 0000000000000040 R14: 0000000080000380 R15: ffff88810ba96500
FS: 0000000000000000(0000) GS:ffff88811a800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe810bda58 CR3: 000000010b720000 CR4: 0000000000350ef0
Call Trace:
<TASK>
usb_start_wait_urb+0x101/0x4c0 drivers/usb/core/message.c:58
usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153
mceusb_gen1_init drivers/media/rc/mceusb.c:1431 [inline]
mceusb_dev_probe+0x258e/0x33f0 drivers/media/rc/mceusb.c:1807

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 7
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

NVD-CWE-noinfo

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-49937",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
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  "affected": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "status": "affected",
              "version": "66e89522aff70fb2701ba8f6845fdcd365dd2ade",
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          "programFiles": [
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  "published": "2025-06-18T11:15:20.570",
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      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mceusb: Use new usb_control_msg_*() routines\n\nAutomatic kernel fuzzing led to a WARN about invalid pipe direction in\nthe mceusb driver:\n\n------------[ cut here ]------------\nusb 6-1: BOGUS control dir, pipe 80000380 doesn't match bRequestType 40\nWARNING: CPU: 0 PID: 2465 at drivers/usb/core/urb.c:410\nusb_submit_urb+0x1326/0x1820 drivers/usb/core/urb.c:410\nModules linked in:\nCPU: 0 PID: 2465 Comm: kworker/0:2 Not tainted 5.19.0-rc4-00208-g69cb6c6556ad #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\n1.13.0-1ubuntu1.1 04/01/2014\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:usb_submit_urb+0x1326/0x1820 drivers/usb/core/urb.c:410\nCode: 7c 24 40 e8 ac 23 91 fd 48 8b 7c 24 40 e8 b2 70 1b ff 45 89 e8\n44 89 f1 4c 89 e2 48 89 c6 48 c7 c7 a0 30 a9 86 e8 48 07 11 02 <0f> 0b\ne9 1c f0 ff ff e8 7e 23 91 fd 0f b6 1d 63 22 83 05 31 ff 41\nRSP: 0018:ffffc900032becf0 EFLAGS: 00010282\nRAX: 0000000000000000 RBX: ffff8881100f3058 RCX: 0000000000000000\nRDX: ffffc90004961000 RSI: ffff888114c6d580 RDI: fffff52000657d90\nRBP: ffff888105ad90f0 R08: ffffffff812c3638 R09: 0000000000000000\nR10: 0000000000000005 R11: ffffed1023504ef1 R12: ffff888105ad9000\nR13: 0000000000000040 R14: 0000000080000380 R15: ffff88810ba96500\nFS: 0000000000000000(0000) GS:ffff88811a800000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007ffe810bda58 CR3: 000000010b720000 CR4: 0000000000350ef0\nCall Trace:\n<TASK>\nusb_start_wait_urb+0x101/0x4c0 drivers/usb/core/message.c:58\nusb_internal_control_msg drivers/usb/core/message.c:102 [inline]\nusb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153\nmceusb_gen1_init drivers/media/rc/mceusb.c:1431 [inline]\nmceusb_dev_probe+0x258e/0x33f0 drivers/media/rc/mceusb.c:1807\n\nThe reason for the warning is clear enough; the driver sends an\nunusual read request on endpoint 0 but does not set the USB_DIR_IN bit\nin the bRequestType field.\n\nMore importantly, the whole situation can be avoided and the driver\nsimplified by converting it over to the relatively new\nusb_control_msg_recv() and usb_control_msg_send() routines.  That's\nwhat this fix does."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: mceusb: Utilizar nuevas rutinas usb_control_msg_*() El fuzzing automático del kernel provocó una ADVERTENCIA sobre una dirección de tubería no válida en el controlador mceusb: ------------[ cortar aquí ]------------ usb 6-1: directorio de control FALSO, la tubería 80000380 no coincide con bRequestType 40 ADVERTENCIA: CPU: 0 PID: 2465 en drivers/usb/core/urb.c:410 usb_submit_urb+0x1326/0x1820 drivers/usb/core/urb.c:410 Módulos vinculados: CPU: 0 PID: 2465 Comm: kworker/0:2 No contaminado 5.19.0-rc4-00208-g69cb6c6556ad #1 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 01/04/2014 Cola de trabajo: usb_hub_wq hub_event RIP: 0010:usb_submit_urb+0x1326/0x1820 drivers/usb/core/urb.c:410 Código: 7c 24 40 e8 ac 23 91 fd 48 8b 7c 24 40 e8 b2 70 1b ff 45 89 e8 44 89 f1 4c 89 e2 48 89 c6 48 c7 c7 a0 30 a9 86 e8 48 07 11 02 &lt;0f&gt; 0b e9 1c f0 ff ff e8 7e 23 91 fd 0f b6 1d 63 22 83 05 31 y siguientes 41 RSP: 0018:ffffc900032becf0 EFLAGS: 00010282 RAX: 000000000000000 RBX: ffff8881100f3058 RCX: 0000000000000000 RDX: ffffc90004961000 RSI: ffff888114c6d580 RDI: fffff52000657d90 RBP: ffff888105ad90f0 R08: ffffffff812c3638 R09: 000000000000000 R10: 0000000000000005 R11: ffffed1023504ef1 R12: ffff888105ad9000 R13: 0000000000000040 R14: 0000000080000380 R15: ffff88810ba96500 FS: 0000000000000000(0000) GS:ffff88811a800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe810bda58 CR3: 000000010b720000 CR4: 0000000000350ef0 Seguimiento de llamadas:  usb_start_wait_urb+0x101/0x4c0 drivers/usb/core/message.c:58 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 mceusb_gen1_init drivers/media/rc/mceusb.c:1431 [inline] mceusb_dev_probe+0x258e/0x33f0 drivers/media/rc/mceusb.c:1807 El motivo de la advertencia es bastante claro; el controlador envía una solicitud de lectura inusual en el endpoint 0 pero no establece el bit USB_DIR_IN en el campo bRequestType. Más importante aún, se puede evitar toda la situación y simplificar el controlador al convertirlo a las relativamente nuevas rutinas usb_control_msg_recv() y usb_control_msg_send(). Esto es lo que hace esta corrección."
    }
  ],
  "lastModified": "2026-06-17T05:19:34.607",
  "configurations": [
    {
      "nodes": [
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}