CVE-2025-68750 (GCVE-0-2025-68750)

Vulnerability from cvelistv5 – Published: 2025-12-24 15:51 – Updated: 2026-05-11 21:52
VLAI
Title
usb: potential integer overflow in usbg_make_tpg()
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: potential integer overflow in usbg_make_tpg() The variable tpgt in usbg_make_tpg() is defined as unsigned long and is assigned to tpgt->tport_tpgt, which is defined as u16. This may cause an integer overflow when tpgt is greater than USHRT_MAX (65535). I haven't tried to trigger it myself, but it is possible to trigger it by calling usbg_make_tpg() with a large value for tpgt. I modified the type of tpgt to match tpgt->tport_tpgt and adjusted the relevant code accordingly. This patch is similar to commit 59c816c1f24d ("vhost/scsi: potential memory corruption").
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c52661d60f636d17e26ad834457db333bd1df494 , < 0861b9cb2ff519b7c5a3b1dd52a343e18c4efb24 (git)
Affected: c52661d60f636d17e26ad834457db333bd1df494 , < 603a83e5fee38a950bfcfb2f36449311fa00a474 (git)
Affected: c52661d60f636d17e26ad834457db333bd1df494 , < 6f77e344515b5258edb3988188311464209b1c7c (git)
Affected: c52661d60f636d17e26ad834457db333bd1df494 , < 6722e080b5b39ab7471386c73d0c1b39572f943c (git)
Affected: c52661d60f636d17e26ad834457db333bd1df494 , < a33f507f36d5881f602dab581ab0f8d22b49762c (git)
Affected: c52661d60f636d17e26ad834457db333bd1df494 , < 358d5ba08f1609c34a054aed88c431844d09705a (git)
Affected: c52661d60f636d17e26ad834457db333bd1df494 , < 620a5e1e84a3a7004270703a118d33eeb1c0f368 (git)
Affected: c52661d60f636d17e26ad834457db333bd1df494 , < 153874010354d050f62f8ae25cbb960c17633dc5 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.5
Unaffected: 0 , < 3.5 (semver)
Unaffected: 5.4.296 , ≤ 5.4.* (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.187 , ≤ 5.15.* (semver)
Unaffected: 6.1.143 , ≤ 6.1.* (semver)
Unaffected: 6.6.96 , ≤ 6.6.* (semver)
Unaffected: 6.12.36 , ≤ 6.12.* (semver)
Unaffected: 6.15.5 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: potential integer overflow in usbg_make_tpg()\n\nThe variable tpgt in usbg_make_tpg() is defined as unsigned long and is\nassigned to tpgt-\u003etport_tpgt, which is defined as u16. This may cause an\ninteger overflow when tpgt is greater than USHRT_MAX (65535). I\nhaven\u0027t tried to trigger it myself, but it is possible to trigger it\nby calling usbg_make_tpg() with a large value for tpgt.\n\nI modified the type of tpgt to match tpgt-\u003etport_tpgt and adjusted the\nrelevant code accordingly.\n\nThis patch is similar to commit 59c816c1f24d (\"vhost/scsi: potential\nmemory corruption\")."
        }
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      "providerMetadata": {
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          "url": "https://git.kernel.org/stable/c/603a83e5fee38a950bfcfb2f36449311fa00a474"
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          "url": "https://git.kernel.org/stable/c/6f77e344515b5258edb3988188311464209b1c7c"
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        {
          "url": "https://git.kernel.org/stable/c/153874010354d050f62f8ae25cbb960c17633dc5"
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      "title": "usb: potential integer overflow in usbg_make_tpg()",
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    "datePublished": "2025-12-24T15:51:03.141Z",
    "dateReserved": "2025-12-24T10:30:51.032Z",
    "dateUpdated": "2026-05-11T21:52:37.371Z",
    "state": "PUBLISHED"
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          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: potential integer overflow in usbg_make_tpg()\n\nThe variable tpgt in usbg_make_tpg() is defined as unsigned long and is\nassigned to tpgt-\u003etport_tpgt, which is defined as u16. This may cause an\ninteger overflow when tpgt is greater than USHRT_MAX (65535). I\nhaven\u0027t tried to trigger it myself, but it is possible to trigger it\nby calling usbg_make_tpg() with a large value for tpgt.\n\nI modified the type of tpgt to match tpgt-\u003etport_tpgt and adjusted the\nrelevant code accordingly.\n\nThis patch is similar to commit 59c816c1f24d (\"vhost/scsi: potential\nmemory corruption\")."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nusb: potencial desbordamiento de entero en usbg_make_tpg()\n\nLa variable tpgt en usbg_make_tpg() est\u00e1 definida como unsigned long y se asigna a tpgt -\u003e tport_tpgt, que est\u00e1 definida como u16. Esto puede causar un desbordamiento de entero cuando tpgt es mayor que USHRT_MAX (65535). No he intentado activarlo yo mismo, pero es posible activarlo llamando a usbg_make_tpg() con un valor grande para tpgt.\n\nModifiqu\u00e9 el tipo de tpgt para que coincida con tpgt -\u003e tport_tpgt y ajust\u00e9 el c\u00f3digo relevante en consecuencia.\n\nEste parche es similar al commit 59c816c1f24d (\u0027vhost/scsi: potencial corrupci\u00f3n de memoria\u0027)."
          }
        ],
        "id": "CVE-2025-68750",
        "lastModified": "2026-10-13T10:10:00.193",
        "metrics": {},
        "published": "2025-12-24T16:15:48.687",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          }
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-05T15:42:33+00:00",
      "cve": "CVE-2025-68750",
      "id": "CVE-2025-68750",
      "initial_release_date": "2025-12-24T00:00:00+00:00",
      "product_status:known_not_affected": "200",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: potential integer overflow in usbg_make_tpg()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68750.json",
      "version": "3"
    }
  }
}



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