CVE-2025-21776 (GCVE-0-2025-21776)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:18 – Updated: 2026-05-12 12:03
VLAI
Title
USB: hub: Ignore non-compliant devices with too many configs or interfaces
Summary
In the Linux kernel, the following vulnerability has been resolved: USB: hub: Ignore non-compliant devices with too many configs or interfaces Robert Morris created a test program which can cause usb_hub_to_struct_hub() to dereference a NULL or inappropriate pointer: Oops: general protection fault, probably for non-canonical address 0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI CPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 Not tainted 6.13.0-rc3-00017-gf44d154d6e3d #14 Hardware name: FreeBSD BHYVE/BHYVE, BIOS 14.0 10/17/2021 Workqueue: usb_hub_wq hub_event RIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110 ... Call Trace: <TASK> ? die_addr+0x31/0x80 ? exc_general_protection+0x1b4/0x3c0 ? asm_exc_general_protection+0x26/0x30 ? usb_hub_adjust_deviceremovable+0x78/0x110 hub_probe+0x7c7/0xab0 usb_probe_interface+0x14b/0x350 really_probe+0xd0/0x2d0 ? __pfx___device_attach_driver+0x10/0x10 __driver_probe_device+0x6e/0x110 driver_probe_device+0x1a/0x90 __device_attach_driver+0x7e/0xc0 bus_for_each_drv+0x7f/0xd0 __device_attach+0xaa/0x1a0 bus_probe_device+0x8b/0xa0 device_add+0x62e/0x810 usb_set_configuration+0x65d/0x990 usb_generic_driver_probe+0x4b/0x70 usb_probe_device+0x36/0xd0 The cause of this error is that the device has two interfaces, and the hub driver binds to interface 1 instead of interface 0, which is where usb_hub_to_struct_hub() looks. We can prevent the problem from occurring by refusing to accept hub devices that violate the USB spec by having more than one configuration or interface.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 , < 49f077106fa07919a6a6dda99bb490dd1d1a8218 (git)
Affected: d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 , < d343fe0fad5c1d689775f2dda24a85ce98e29566 (git)
Affected: d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 , < d3a67adb365cdfdac4620daf38a82e57ca45806c (git)
Affected: d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 , < c3720b04df84b5459050ae4e03ec7d545652f897 (git)
Affected: d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 , < e905a0fca7bff0855d312c16f71e60e1773b393e (git)
Affected: d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 , < 62d8f4c5454dd39aded4f343720d1c5a1803cfef (git)
Affected: d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 , < 5b9778e1fe715700993ce436c152dc3b7df0b490 (git)
Affected: d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 , < 2240fed37afbcdb5e8b627bc7ad986891100e05d (git)
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Linux Linux Affected: 3.9
Unaffected: 0 , < 3.9 (semver)
Unaffected: 5.4.291 , ≤ 5.4.* (semver)
Unaffected: 5.10.235 , ≤ 5.10.* (semver)
Unaffected: 5.15.179 , ≤ 5.15.* (semver)
Unaffected: 6.1.129 , ≤ 6.1.* (semver)
Unaffected: 6.6.79 , ≤ 6.6.* (semver)
Unaffected: 6.12.16 , ≤ 6.12.* (semver)
Unaffected: 6.13.4 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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Siemens SIMATIC S7-1500 TM MFP - BIOS Affected: 0 , < * (custom)
Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: hub: Ignore non-compliant devices with too many configs or interfaces\n\nRobert Morris created a test program which can cause\nusb_hub_to_struct_hub() to dereference a NULL or inappropriate\npointer:\n\nOops: general protection fault, probably for non-canonical address\n0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI\nCPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 Not tainted 6.13.0-rc3-00017-gf44d154d6e3d #14\nHardware name: FreeBSD BHYVE/BHYVE, BIOS 14.0 10/17/2021\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110\n...\nCall Trace:\n \u003cTASK\u003e\n ? die_addr+0x31/0x80\n ? exc_general_protection+0x1b4/0x3c0\n ? asm_exc_general_protection+0x26/0x30\n ? usb_hub_adjust_deviceremovable+0x78/0x110\n hub_probe+0x7c7/0xab0\n usb_probe_interface+0x14b/0x350\n really_probe+0xd0/0x2d0\n ? __pfx___device_attach_driver+0x10/0x10\n __driver_probe_device+0x6e/0x110\n driver_probe_device+0x1a/0x90\n __device_attach_driver+0x7e/0xc0\n bus_for_each_drv+0x7f/0xd0\n __device_attach+0xaa/0x1a0\n bus_probe_device+0x8b/0xa0\n device_add+0x62e/0x810\n usb_set_configuration+0x65d/0x990\n usb_generic_driver_probe+0x4b/0x70\n usb_probe_device+0x36/0xd0\n\nThe cause of this error is that the device has two interfaces, and the\nhub driver binds to interface 1 instead of interface 0, which is where\nusb_hub_to_struct_hub() looks.\n\nWe can prevent the problem from occurring by refusing to accept hub\ndevices that violate the USB spec by having more than one\nconfiguration or interface."
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    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21776\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-27T03:15:18.263\",\"lastModified\":\"2026-05-12T13:16:36.680\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nUSB: hub: Ignore non-compliant devices with too many configs or interfaces\\n\\nRobert Morris created a test program which can cause\\nusb_hub_to_struct_hub() to dereference a NULL or inappropriate\\npointer:\\n\\nOops: general protection fault, probably for non-canonical address\\n0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI\\nCPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 Not tainted 6.13.0-rc3-00017-gf44d154d6e3d #14\\nHardware name: FreeBSD BHYVE/BHYVE, BIOS 14.0 10/17/2021\\nWorkqueue: usb_hub_wq hub_event\\nRIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110\\n...\\nCall Trace:\\n \u003cTASK\u003e\\n ? die_addr+0x31/0x80\\n ? exc_general_protection+0x1b4/0x3c0\\n ? asm_exc_general_protection+0x26/0x30\\n ? usb_hub_adjust_deviceremovable+0x78/0x110\\n hub_probe+0x7c7/0xab0\\n usb_probe_interface+0x14b/0x350\\n really_probe+0xd0/0x2d0\\n ? __pfx___device_attach_driver+0x10/0x10\\n __driver_probe_device+0x6e/0x110\\n driver_probe_device+0x1a/0x90\\n __device_attach_driver+0x7e/0xc0\\n bus_for_each_drv+0x7f/0xd0\\n __device_attach+0xaa/0x1a0\\n bus_probe_device+0x8b/0xa0\\n device_add+0x62e/0x810\\n usb_set_configuration+0x65d/0x990\\n usb_generic_driver_probe+0x4b/0x70\\n usb_probe_device+0x36/0xd0\\n\\nThe cause of this error is that the device has two interfaces, and the\\nhub driver binds to interface 1 instead of interface 0, which is where\\nusb_hub_to_struct_hub() looks.\\n\\nWe can prevent the problem from occurring by refusing to accept hub\\ndevices that violate the USB spec by having more than one\\nconfiguration or interface.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: USB: hub: Ignorar dispositivos no compatibles con demasiadas configuraciones o interfaces Robert Morris cre\u00f3 un programa de prueba que puede hacer que usb_hub_to_struct_hub() desreferenciara un puntero NULL o inapropiado: Ups: error de protecci\u00f3n general, probablemente para una direcci\u00f3n no can\u00f3nica 0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI CPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 No contaminado 6.13.0-rc3-00017-gf44d154d6e3d #14 Nombre del hardware: FreeBSD BHYVE/BHYVE, BIOS 14.0 17/10/2021 Cola de trabajo: usb_hub_wq hub_event RIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110 ... Seguimiento de llamadas:  ? die_addr+0x31/0x80 ? exc_general_protection+0x1b4/0x3c0 ? asm_exc_general_protection+0x26/0x30 ? usb_hub_adjust_deviceremovable+0x78/0x110 hub_probe+0x7c7/0xab0 usb_probe_interface+0x14b/0x350 really_probe+0xd0/0x2d0 ? __pfx___device_attach_driver+0x10/0x10 __driver_probe_device+0x6e/0x110 driver_probe_device+0x1a/0x90 __device_attach_driver+0x7e/0xc0 bus_for_each_drv+0x7f/0xd0 __device_attach+0xaa/0x1a0 bus_probe_device+0x8b/0xa0 device_add+0x62e/0x810 usb_set_configuration+0x65d/0x990 usb_generic_driver_probe+0x4b/0x70 usb_probe_device+0x36/0xd0 La causa de este error es que el dispositivo tiene dos interfaces y el controlador del concentrador se vincula a la interfaz 1 en lugar de a la interfaz 0, que es donde usb_hub_to_struct_hub() analiza. Podemos evitar que se produzca el problema si nos negamos a aceptar dispositivos concentradores que violen la especificaci\u00f3n USB al tener m\u00e1s de una configuraci\u00f3n o interfaz.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.1.129\",\"matchCriteriaId\":\"18BF0B0B-D95C-472C-A99F-DE209F253F6F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.79\",\"matchCriteriaId\":\"B16AADE5-B2FD-4C14-B4E4-85E8EDAFE775\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.16\",\"matchCriteriaId\":\"13C8DB18-FC60-425F-84E5-3EDDEC61B2FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.4\",\"matchCriteriaId\":\"2A2093ED-74A9-43F9-AC72-50030F374EA4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"186716B6-2B66-4BD0-852E-D48E71C0C85F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"0D3E781C-403A-498F-9DA9-ECEE50F41E75\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2240fed37afbcdb5e8b627bc7ad986891100e05d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/49f077106fa07919a6a6dda99bb490dd1d1a8218\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5b9778e1fe715700993ce436c152dc3b7df0b490\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/62d8f4c5454dd39aded4f343720d1c5a1803cfef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c3720b04df84b5459050ae4e03ec7d545652f897\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d343fe0fad5c1d689775f2dda24a85ce98e29566\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d3a67adb365cdfdac4620daf38a82e57ca45806c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e905a0fca7bff0855d312c16f71e60e1773b393e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-503939.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}"
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.