{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "bb124da69c47dd98d69361ec13244ece50bec63e"
            },
            {
              "fixed": "656d40d1ca228ee21a9b3280432479fc9eae75ab"
            },
            {
              "fixed": "e2e1161e03fecff6d2229a81b024337144bfcd97"
            },
            {
              "fixed": "f8ae8275c721334ee50fafdd986fb83294eb941a"
            },
            {
              "fixed": "c3fd8e5fd100f122bad503bdc0e9277219533253"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "bfc5c19b4b48840627af0d0f1c8f4461b276e508"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.6.15"
            },
            {
              "fixed": "6.7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98007.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject non-scalar bpf_loop iteration counts\n\nbpf_loop() declares its nr_loops argument as ARG_ANYTHING. Privileged\nprograms may pass pointer values to such arguments, so check_func_arg()\nlets a pointer-valued R1 reach the helper-specific checks.\n\nSince commit bb124da69c47 (\"bpf: keep track of max number of bpf_loop\ncallback iterations\"), the verifier marks R1 precise and reads its upper\nbound to limit callback simulation. Precision backtracking only accepts\nscalar registers, so passing a pointer instead triggers the \"backtracking\nmisuse\" verifier warning. Kernels with panic_on_warn enabled subsequently\npanic.\n\nIntroduce ARG_SCALAR for helper arguments that only accept scalar values\nand use it for bpf_loop() nr_loops. Generic helper argument validation then\nrejects pointers before loop inlining and precision processing.",
  "id": "CVE-2026-98007",
  "modified": "2026-09-27T03:30:28.861169630Z",
  "published": "2026-09-25T10:23:32.939Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/656d40d1ca228ee21a9b3280432479fc9eae75ab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3fd8e5fd100f122bad503bdc0e9277219533253"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2e1161e03fecff6d2229a81b024337144bfcd97"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8ae8275c721334ee50fafdd986fb83294eb941a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98007.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98007"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "bpf: Reject non-scalar bpf_loop iteration counts"
}