CVE-2026-45911

Estado: En análisisMedia (5.5)—

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

usb: cdns3: fix role switching during resume

If the role change while we are suspended, the cdns3 driver switches to the new mode during resume. However, switching to host mode in this context causes a NULL pointer dereference.

The host role's start() operation registers a xhci-hcd device, but its probe is deferred while we are in the resume path. The host role's resume() operation assumes the xhci-hcd device is already probed, which is not the case, leading to the dereference. Since the start() operation of the new role is already called, the resume operation can be skipped.

Leer descripción completaMostrar menos

So skip the resume operation for the new role if a role switch occurs during resume. Once the resume sequence is complete, the xhci-hcd device can be probed in case of host mode.

Detalles técnicos trazas, registros y código del informe original

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000208
Mem abort info:
...
Data abort info:
...
[0000000000000208] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 146 Comm: sh Not tainted
6.19.0-rc7-00013-g6e64f4aabfae-dirty #135 PREEMPT
Hardware name: Texas Instruments J7200 EVM (DT)
pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : usb_hcd_is_primary_hcd+0x0/0x1c
lr : cdns_host_resume+0x24/0x5c
...
Call trace:
 usb_hcd_is_primary_hcd+0x0/0x1c (P)
 cdns_resume+0x6c/0xbc
 cdns3_controller_resume.isra.0+0xe8/0x17c
 cdns3_plat_resume+0x18/0x24
 platform_pm_resume+0x2c/0x68
 dpm_run_callback+0x90/0x248
 device_resume+0x100/0x24c
 dpm_resume+0x190/0x2ec
 dpm_resume_end+0x18/0x34
 suspend_devices_and_enter+0x2b0/0xa44
 pm_suspend+0x16c/0x5fc
 state_store+0x80/0xec
 kobj_attr_store+0x18/0x2c
 sysfs_kf_write+0x7c/0x94
 kernfs_fop_write_iter+0x130/0x1dc
 vfs_write+0x240/0x370
 ksys_write+0x70/0x108
 __arm64_sys_write+0x1c/0x28
 invoke_syscall+0x48/0x10c
 el0_svc_common.constprop.0+0x40/0xe0
 do_el0_svc+0x1c/0x28
 el0_svc+0x34/0x108
 el0t_64_sync_handler+0xa0/0xe4
 el0t_64_sync+0x198/0x19c
Code: 52800003 f9407ca5 d63f00a0 17ffffe4 (f9410401)
---[ end trace 0000000000000000 ]---

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: 0.16%
Percentil entre todas las CVEs puntuadas: 5
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

CWE-476

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-45911",
  "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
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2cf2581cd2290ccef674f1be5f7977d66702eedb",
              "lessThan": "ff02bd303d2d78051771db51119d66c0cf442f47",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2cf2581cd2290ccef674f1be5f7977d66702eedb",
              "lessThan": "94c742614899ff18a6b3e6f3cfbe7b9f36c865f3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2cf2581cd2290ccef674f1be5f7977d66702eedb",
              "lessThan": "d637f6ec149ffd2f8257bcc261561dc2e44dbb8c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2cf2581cd2290ccef674f1be5f7977d66702eedb",
              "lessThan": "56289298431ed76700b9aac27a3b1d929fe61b8d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2cf2581cd2290ccef674f1be5f7977d66702eedb",
              "lessThan": "fc086c0ce3db0eefbbeb66a5b1e626296336e33a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2cf2581cd2290ccef674f1be5f7977d66702eedb",
              "lessThan": "49c99dc247ebf7361db9dbdade3dcebfffaf2c22",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2cf2581cd2290ccef674f1be5f7977d66702eedb",
              "lessThan": "87e4b043b98a1d269be0b812f383881abee0ca45",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/usb/cdns3/core.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.203",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.77",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/usb/cdns3/core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-05-27T14:17:05.687",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/49c99dc247ebf7361db9dbdade3dcebfffaf2c22",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/56289298431ed76700b9aac27a3b1d929fe61b8d",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/87e4b043b98a1d269be0b812f383881abee0ca45",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/94c742614899ff18a6b3e6f3cfbe7b9f36c865f3",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d637f6ec149ffd2f8257bcc261561dc2e44dbb8c",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fc086c0ce3db0eefbbeb66a5b1e626296336e33a",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ff02bd303d2d78051771db51119d66c0cf442f47",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: fix role switching during resume\n\nIf the role change while we are suspended, the cdns3 driver switches to the\nnew mode during resume. However, switching to host mode in this context\ncauses a NULL pointer dereference.\n\nThe host role's start() operation registers a xhci-hcd device, but its\nprobe is deferred while we are in the resume path. The host role's resume()\noperation assumes the xhci-hcd device is already probed, which is not the\ncase, leading to the dereference. Since the start() operation of the new\nrole is already called, the resume operation can be skipped.\n\nSo skip the resume operation for the new role if a role switch occurs\nduring resume. Once the resume sequence is complete, the xhci-hcd device\ncan be probed in case of host mode.\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000208\nMem abort info:\n...\nData abort info:\n...\n[0000000000000208] pgd=0000000000000000, p4d=0000000000000000\nInternal error: Oops: 0000000096000004 [#1]  SMP\nModules linked in:\nCPU: 0 UID: 0 PID: 146 Comm: sh Not tainted\n6.19.0-rc7-00013-g6e64f4aabfae-dirty #135 PREEMPT\nHardware name: Texas Instruments J7200 EVM (DT)\npstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : usb_hcd_is_primary_hcd+0x0/0x1c\nlr : cdns_host_resume+0x24/0x5c\n...\nCall trace:\n usb_hcd_is_primary_hcd+0x0/0x1c (P)\n cdns_resume+0x6c/0xbc\n cdns3_controller_resume.isra.0+0xe8/0x17c\n cdns3_plat_resume+0x18/0x24\n platform_pm_resume+0x2c/0x68\n dpm_run_callback+0x90/0x248\n device_resume+0x100/0x24c\n dpm_resume+0x190/0x2ec\n dpm_resume_end+0x18/0x34\n suspend_devices_and_enter+0x2b0/0xa44\n pm_suspend+0x16c/0x5fc\n state_store+0x80/0xec\n kobj_attr_store+0x18/0x2c\n sysfs_kf_write+0x7c/0x94\n kernfs_fop_write_iter+0x130/0x1dc\n vfs_write+0x240/0x370\n ksys_write+0x70/0x108\n __arm64_sys_write+0x1c/0x28\n invoke_syscall+0x48/0x10c\n el0_svc_common.constprop.0+0x40/0xe0\n do_el0_svc+0x1c/0x28\n el0_svc+0x34/0x108\n el0t_64_sync_handler+0xa0/0xe4\n el0t_64_sync+0x198/0x19c\nCode: 52800003 f9407ca5 d63f00a0 17ffffe4 (f9410401)\n---[ end trace 0000000000000000 ]---"
    }
  ],
  "lastModified": "2026-06-24T14:55:22.987",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "985804EB-66D2-4D4A-AF5D-D7A87E940EEE",
              "versionEndExcluding": "5.15.203",
              "versionStartIncluding": "5.13"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2EDC6BAF-B710-4E26-B6AA-D68922EE7B43",
              "versionEndExcluding": "6.1.167",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C57BB918-DF28-46B3-94F7-144176841267",
              "versionEndExcluding": "6.6.130",
              "versionStartIncluding": "6.2"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B3D12E00-E42D-4056-B354-BAD4903C03A5",
              "versionEndExcluding": "6.12.77",
              "versionStartIncluding": "6.7"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BF463CB7-1F58-4607-B847-77ED23E4B9B7",
              "versionEndExcluding": "6.18.14",
              "versionStartIncluding": "6.13"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092",
              "versionEndExcluding": "6.19.4",
              "versionStartIncluding": "6.19"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}