FKIE_CVE-2026-98770

Vulnerability from fkie_nvd - Published: 2026-10-18 16:17 - Updated: 2026-10-21 13:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: midi2: Fix the jack descriptor array sizes The jack in/out descriptor arrays in struct f_midi2_usb_config have the size of MAX_CABLES, which look reasonable -- but it turned out to be incorrect. Namely, the entries for those arrays are added from both inputs and outputs, hence for each loop cycle, it adds two, ended up with as twice as the expected size. This inconsistency may result in potential OOB when a large number of jacks are set up via configfs, although the max number of cables (the loop count) is limited to MAX_CABLES. For addressing it, correct the jack_ins & jack_outs array sizes to twice, MAX_CABLES * 2.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/18138d9f19cf6944ff09f5c8c0930545036fe3d0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/223c3bd02a582776d8ee47dae7b69d3258420694
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/310c2d4608d8c1a2baa57db1dfd319c5c40cf4a1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8294ff75a9de23f7cc641e5e5ca31fa6ea72a574
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87f2185423e01f113811301878f2f67eccec960d
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/f_midi2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "18138d9f19cf6944ff09f5c8c0930545036fe3d0",
              "status": "affected",
              "version": "856fa444b0982746f95e801bab0e586533eb29a3",
              "versionType": "git"
            },
            {
              "lessThan": "8294ff75a9de23f7cc641e5e5ca31fa6ea72a574",
              "status": "affected",
              "version": "856fa444b0982746f95e801bab0e586533eb29a3",
              "versionType": "git"
            },
            {
              "lessThan": "87f2185423e01f113811301878f2f67eccec960d",
              "status": "affected",
              "version": "856fa444b0982746f95e801bab0e586533eb29a3",
              "versionType": "git"
            },
            {
              "lessThan": "223c3bd02a582776d8ee47dae7b69d3258420694",
              "status": "affected",
              "version": "856fa444b0982746f95e801bab0e586533eb29a3",
              "versionType": "git"
            },
            {
              "lessThan": "310c2d4608d8c1a2baa57db1dfd319c5c40cf4a1",
              "status": "affected",
              "version": "856fa444b0982746f95e801bab0e586533eb29a3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/f_midi2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: midi2: Fix the jack descriptor array sizes\n\nThe jack in/out descriptor arrays in struct f_midi2_usb_config have\nthe size of MAX_CABLES, which look reasonable -- but it turned out to\nbe incorrect.  Namely, the entries for those arrays are added from\nboth inputs and outputs, hence for each loop cycle, it adds two, ended\nup with as twice as the expected size.  This inconsistency may result\nin potential OOB when a large number of jacks are set up via configfs,\nalthough the max number of cables (the loop count) is limited to\nMAX_CABLES.\n\nFor addressing it, correct the jack_ins \u0026 jack_outs array sizes to\ntwice, MAX_CABLES * 2."
    }
  ],
  "id": "CVE-2026-98770",
  "lastModified": "2026-10-21T13:21:45.227",
  "metrics": {},
  "published": "2026-10-18T16:17:30.920",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/18138d9f19cf6944ff09f5c8c0930545036fe3d0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/223c3bd02a582776d8ee47dae7b69d3258420694"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/310c2d4608d8c1a2baa57db1dfd319c5c40cf4a1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8294ff75a9de23f7cc641e5e5ca31fa6ea72a574"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/87f2185423e01f113811301878f2f67eccec960d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.