CVE-2026-46289 lib/scatterlist: fix length calculations in extract_kvec_to_sg

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "lib/scatterlist.c"
    ],
    "versions": [
      {
        "version": "0185846975339a5c348373aa450a977f5242366b",
        "lessThan": "3f17500e86d730c76db638bb3ae52f9b5e496c76",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0185846975339a5c348373aa450a977f5242366b",
        "lessThan": "e5e22fc9963469e678c4f4bb38d26adcec107f1e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0185846975339a5c348373aa450a977f5242366b",
        "lessThan": "8fbba6829057979149d1b37d65690c037f3ddf4d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0185846975339a5c348373aa450a977f5242366b",
        "lessThan": "9d38756d0a93b66163554219fa9c3365f40c4035",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0185846975339a5c348373aa450a977f5242366b",
        "lessThan": "07b7d66e65d9cfe6b9c2c34aa22cfcaac37a5c45",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "lib/scatterlist.c"
    ],
    "versions": [
      {
        "version": "6.3",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.3",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.140",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.88",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.30",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.7",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]