{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e821ff19b8ef08255ff8d8234774ed814637e9bf",
              "status": "affected",
              "version": "ec1d77cb0ee98249142dcd0376d76e7a48ba0b31",
              "versionType": "git"
            },
            {
              "lessThan": "73a98f96811e2cb0f4210b1caa8cb322f92f2a2b",
              "status": "affected",
              "version": "ec1d77cb0ee98249142dcd0376d76e7a48ba0b31",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "lessThan": "7.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Don\u0027t resurrect a scalar id dropped by collect_linked_regs()\n\ncheck_cond_jmp_op() copies the compared registers into\nenv-\u003e{false,true}_reg{1,2} before collect_linked_regs() runs and copies\nthose snapshots back into both branch states afterwards.\n\ncollect_linked_regs() records at most LINKED_REGS_MAX members of a\nlinked registers group in the jump history and calls clear_scalar_id()\nfor every member that does not fit. The compared register is not exempt\nfrom that.\n\nAs a consequence, sync_linked_regs() might adjust ranges for more\nregisters than bpf_bt_sync_linked_regs() can propagate precision to.\n\nCollect the linked registers before the snapshots are taken instead.\nThis might lead to some unnecessary clear_scalar_id\u0027s, but from\nprevious testing situations with many linked registers are\nextremely rare."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:12:48.113Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e821ff19b8ef08255ff8d8234774ed814637e9bf"
        },
        {
          "url": "https://git.kernel.org/stable/c/73a98f96811e2cb0f4210b1caa8cb322f92f2a2b"
        }
      ],
      "title": "bpf: Don\u0027t resurrect a scalar id dropped by collect_linked_regs()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98042",
    "datePublished": "2026-09-25T10:23:54.242Z",
    "dateReserved": "2026-09-25T10:19:56.071Z",
    "dateUpdated": "2026-10-19T09:12:48.113Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}