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CVE-2026-98770

Status: ReceivedUnscored—
Severity—Unscored
Exploitation probability0.20 %higher than 9% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

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.

Read full descriptionShow less

For addressing it, correct the jack_ins & jack_outs array sizes to twice, MAX_CABLES * 2.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.20 %
Percentile among all scored CVEs
9
Score date
10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux KernelAI

References

Show 4 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-98770",
  "cveTags": [],
  "metrics": {},
  "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": "856fa444b0982746f95e801bab0e586533eb29a3",
              "lessThan": "8294ff75a9de23f7cc641e5e5ca31fa6ea72a574",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "856fa444b0982746f95e801bab0e586533eb29a3",
              "lessThan": "87f2185423e01f113811301878f2f67eccec960d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "856fa444b0982746f95e801bab0e586533eb29a3",
              "lessThan": "223c3bd02a582776d8ee47dae7b69d3258420694",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "856fa444b0982746f95e801bab0e586533eb29a3",
              "lessThan": "310c2d4608d8c1a2baa57db1dfd319c5c40cf4a1",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/usb/gadget/function/f_midi2.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/usb/gadget/function/f_midi2.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:17:30.920",
  "references": [
    {
      "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",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "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 & jack_outs array sizes to\ntwice, MAX_CABLES * 2."
    }
  ],
  "lastModified": "2026-10-19T10:19:41.123",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}