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CVE-2026-31617 usb: gadget: f_ncm: validate minimum block_len in ncm_unwrap_ntb()

🗓️ 24 Apr 2026 14:42:36Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 44 Views

CVE-2026-31617: USB gadget f_ncm validates minimum block_len in ncm_unwrap_ntb to prevent underflow.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/usb/gadget/function/f_ncm.c"
    ],
    "versions": [
      {
        "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52",
        "lessThan": "068a7f2749fff6462a0a908ec415b885fe430f50",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52",
        "lessThan": "1425655c2870054c3ab4712e2b6dbdd331597ada",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52",
        "lessThan": "8b3b7bd3c02f98634baaf36c7fc7ac915f6517ca",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52",
        "lessThan": "0f156bb5334e588034ca68ac2ee92b23f66e56e7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52",
        "lessThan": "8757a2593631443648218244b9788e193ae0fdc1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52",
        "lessThan": "6762f8a95772265dd0c2ffe7f400493f3115b135",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52",
        "lessThan": "d58ba8f6546232f8414f396c189297dbee03f1a7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52",
        "lessThan": "74908b0318d1df1188457040b8714ff4d4b68126",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b74b0a04d3e9f9f08ff026e5663dce88ff94e52",
        "lessThan": "8f993d30b95dc9557a8a96ceca11abed674c8acb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f7e0611e207d8908c4f2858e244370529a76dbf7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b88ad6e714284b33a47834f5f2a294c2b37c66aa",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "471b23586387a32857778c511be60ab31c98dcfd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4f529c4d1e436230d3af7c09a3239677a14d2b46",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ae6a5394d9fbe118bc95cfe376d6a9d91d7547e8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4.9.235",
        "lessThan": "4.10",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.14.196",
        "lessThan": "4.15",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "4.19.143",
        "lessThan": "4.20",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.4.62",
        "lessThan": "5.5",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.8.6",
        "lessThan": "5.9",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/usb/gadget/function/f_ncm.c"
    ],
    "versions": [
      {
        "version": "5.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.9",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.258",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.209",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.136",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.83",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.24",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.14",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.1",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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14 Jun 2026 17:43Current
EPSS0.00129
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