CVE-2026-98762 (GCVE-0-2026-98762)
Vulnerability from cvelistv5
Published
2026-10-18 15:47
Modified
2026-10-30 12:39
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: USB: dwc2: shut down wakeup timer before freeing HCD state dwc2_wakeup_detected() accesses the DWC2 host state and can rearm the wakeup timer. dwc2_hcd_free() currently deletes the timer only after freeing host-owned state, and timer_delete() does not synchronize a callback or prevent it from being queued again. Stop and shut down the timer in dwc2_hcd_release(), before the HCD resources are freed. This covers both the HCD initialization error path and normal HCD removal.
References
Impacted products
Vendor Product Version
Linux Linux Version: 7359d482eb4d3967cc8be354405ae6be6eaf732c
Version: 7359d482eb4d3967cc8be354405ae6be6eaf732c
Version: 7359d482eb4d3967cc8be354405ae6be6eaf732c
Version: 7359d482eb4d3967cc8be354405ae6be6eaf732c
Version: 7359d482eb4d3967cc8be354405ae6be6eaf732c
Version: 7359d482eb4d3967cc8be354405ae6be6eaf732c
Version: 7359d482eb4d3967cc8be354405ae6be6eaf732c
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/dwc2/hcd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f3d76baa5b902f681100447e9d185819c5c1316d",
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              "versionType": "git"
            },
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            {
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/dwc2/hcd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.10"
            },
            {
              "lessThan": "3.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.224",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.224",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.191",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.113",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.56",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.10",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: dwc2: shut down wakeup timer before freeing HCD state\n\ndwc2_wakeup_detected() accesses the DWC2 host state and can rearm the\nwakeup timer.  dwc2_hcd_free() currently deletes the timer only after\nfreeing host-owned state, and timer_delete() does not synchronize a\ncallback or prevent it from being queued again.\n\nStop and shut down the timer in dwc2_hcd_release(), before the HCD\nresources are freed.  This covers both the HCD initialization error path\nand normal HCD removal."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:39:31.169Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f3d76baa5b902f681100447e9d185819c5c1316d"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b2ea59d66d046d5601ffc3e61dd09d3597c704e"
        },
        {
          "url": "https://git.kernel.org/stable/c/82cc242da6d621752718929e6a2fa6f9554ebffe"
        },
        {
          "url": "https://git.kernel.org/stable/c/441be312fce927443eae2821f502344d953c38bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/4333174ea52c863a50bb3e0a4726bf9f7cdf7524"
        },
        {
          "url": "https://git.kernel.org/stable/c/79ba37dd38a321cb32a79332a3e3c68dd334dca9"
        },
        {
          "url": "https://git.kernel.org/stable/c/fd772af9512cdecb83de34a461801533828e77fd"
        }
      ],
      "title": "USB: dwc2: shut down wakeup timer before freeing HCD state",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98762",
    "datePublished": "2026-10-18T15:47:53.656Z",
    "dateReserved": "2026-09-25T10:25:14.368Z",
    "dateUpdated": "2026-10-30T12:39:31.169Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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