{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ee861486e377edc55361c08dcbceab3f6b6577bd"
            },
            {
              "fixed": "671b7b9a660ef15b25faa3df161205b9dc8d1eb2"
            },
            {
              "fixed": "387b1baefbb776e3f48dc2261e77a49213f470f7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "928d354ae3557e8f755a227e67be88034eb3cd7f"
            },
            {
              "last_affected": "8a800497d9f6c2ec9c2c1ba7b71d0ac2ea7f7bbe"
            },
            {
              "last_affected": "de1055e7f9e67af32b1f3376066272b04e5223c0"
            },
            {
              "last_affected": "37ad2bb11e9de92cb7b94548705eeedd87f7d392"
            },
            {
              "last_affected": "8674e2db06cff6b50f2216eed9a761d15425bb34"
            },
            {
              "last_affected": "ce01a4e5cfac7adbe0be565f90cd32ecbb2f8337"
            },
            {
              "last_affected": "d846d83bdacbd8f14fc45c63b8c1d22608452e1c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.10.265"
            },
            {
              "fixed": "5.11"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.15.216"
            },
            {
              "fixed": "5.16"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.1.183"
            },
            {
              "fixed": "6.2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.6.148"
            },
            {
              "fixed": "6.7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.12.101"
            },
            {
              "fixed": "6.13"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.18.42"
            },
            {
              "fixed": "6.19"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "7.0.10"
            },
            {
              "fixed": "7.1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.1.0"
            },
            {
              "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-2026-98085.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: backtrack_insn(): Handle ld_{abs,ind} subprog exit edge\n\nNicholas Carlini reported a bug in precision backtracking mechanism\nfor BPF_LD | BPF_{IND,ABS} instructions. These instructions are\nmodelled as two branches:\n- fallthrough;\n- implicit exit from current subprogram.\n\nThe implicit exit case was not handled by the backtrack_insn()\nfunction. When backtracking such a path backtrack_insn() did not\ncall bt_subprog_enter(), which meant that backtracking continued\nmanipulating precision marks in a caller frame, while looking at\ninstructions in a callee frame.\n\nThis lead to segmentation faults during verification (see the\nselftest), or unsound state pruning.",
  "id": "CVE-2026-98085",
  "modified": "2026-09-27T03:30:29.043117753Z",
  "published": "2026-09-25T10:24:20.485Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/387b1baefbb776e3f48dc2261e77a49213f470f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/671b7b9a660ef15b25faa3df161205b9dc8d1eb2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98085.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98085"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "bpf: backtrack_insn(): Handle ld_{abs,ind} subprog exit edge"
}