CVE-2026-98762 (GCVE-0-2026-98762)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:47 – Updated: 2026-10-30 12:39
VLAI
Title
USB: dwc2: shut down wakeup timer before freeing HCD state
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7359d482eb4d3967cc8be354405ae6be6eaf732c , < f3d76baa5b902f681100447e9d185819c5c1316d (git)
Affected: 7359d482eb4d3967cc8be354405ae6be6eaf732c , < 0b2ea59d66d046d5601ffc3e61dd09d3597c704e (git)
Affected: 7359d482eb4d3967cc8be354405ae6be6eaf732c , < 82cc242da6d621752718929e6a2fa6f9554ebffe (git)
Affected: 7359d482eb4d3967cc8be354405ae6be6eaf732c , < 441be312fce927443eae2821f502344d953c38bb (git)
Affected: 7359d482eb4d3967cc8be354405ae6be6eaf732c , < 4333174ea52c863a50bb3e0a4726bf9f7cdf7524 (git)
Affected: 7359d482eb4d3967cc8be354405ae6be6eaf732c , < 79ba37dd38a321cb32a79332a3e3c68dd334dca9 (git)
Affected: 7359d482eb4d3967cc8be354405ae6be6eaf732c , < fd772af9512cdecb83de34a461801533828e77fd (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 5.15.224 , ≤ 5.15.* (semver)
Unaffected: 6.1.191 , ≤ 6.1.* (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.113 , ≤ 6.12.* (semver)
Unaffected: 6.18.56 , ≤ 6.18.* (semver)
Unaffected: 7.2.10 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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          "programFiles": [
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "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"
      },
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          "url": "https://git.kernel.org/stable/c/f3d76baa5b902f681100447e9d185819c5c1316d"
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          "url": "https://git.kernel.org/stable/c/0b2ea59d66d046d5601ffc3e61dd09d3597c704e"
        },
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          "url": "https://git.kernel.org/stable/c/fd772af9512cdecb83de34a461801533828e77fd"
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    "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",
  "vulnerability-lookup:meta": {
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      "id": "msrc_CVE-2026-98762",
      "initial_release_date": "2026-10-20T01:09:57.000Z",
      "product_status:known_affected": "2",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "USB: dwc2: shut down wakeup timer before freeing HCD state",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98762.json",
      "version": "4"
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                "product": "Linux",
                "programFiles": [
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        "cveTags": [],
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            "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."
          }
        ],
        "id": "CVE-2026-98762",
        "lastModified": "2026-10-30T13:21:25.627",
        "metrics": {},
        "published": "2026-10-18T16:17:30.013",
        "references": [
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        "vulnStatus": "Received"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-21T01:43:52+00:00",
      "cve": "CVE-2026-98762",
      "id": "CVE-2026-98762",
      "initial_release_date": "2026-10-18T15:47:53.656000+00:00",
      "product_status:known_affected": "77",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: kernel: Denial of Service via use-after-free in USB DWC2 driver",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98762.json",
      "version": "3"
    }
  }
}



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