CVE-2026-98041

{
  "id": "CVE-2026-98041",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-25T11:17:32.880",
  "lastModified": "2026-10-21T13:21:19.813",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Don't predict JMP32 pointer vs zero comparisons\n\nConsider the following program:\n\n        r1 = map_value;      /* low 32 bits are zero at runtime */\n        r6 = 0xdead000000000000;\n        if w1 != 0 goto l1;\n    l0: r1 += r6;\n        r2 = *(u64 *)(r1 + 0);\n        exit;\n    l1: r6 = 0;\n        goto l0;\n\nAt the moment is_branch_taken() reports the jump as always taken,\nbecause it does not distinguish between BPF_JMP and BPF_JMP32\ncomparisons when processing 'if w1 != 0 ...'."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "cac616db39c207dc63465a4e05c6ce0e60b2cce4",
              "lessThan": "6e1544986536734166176c3add504add23bcbd15",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "cac616db39c207dc63465a4e05c6ce0e60b2cce4",
              "lessThan": "d16f0eafcaa62e677a2b5b0dabc1f8d31dfe3d4d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "cac616db39c207dc63465a4e05c6ce0e60b2cce4",
              "lessThan": "e2ae33247e8b2dbe9d116d3e61cadf6d548339c6",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "cac616db39c207dc63465a4e05c6ce0e60b2cce4",
              "lessThan": "a4d7f94c1ca914469ced665ec2f98be669aef462",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "cac616db39c207dc63465a4e05c6ce0e60b2cce4",
              "lessThan": "e51179a4e09846f8fd0f26a05068520de2b301bf",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "5.8",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "5.8",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.111",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.53",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.7",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/6e1544986536734166176c3add504add23bcbd15",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a4d7f94c1ca914469ced665ec2f98be669aef462",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d16f0eafcaa62e677a2b5b0dabc1f8d31dfe3d4d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e2ae33247e8b2dbe9d116d3e61cadf6d548339c6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e51179a4e09846f8fd0f26a05068520de2b301bf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}