{"schema":"threatline.record/2","record":{"id":"CVE-2026-98085","aliases":[],"summary":"bpf: backtrack_insn(): Handle ld_{abs,ind} subprog exit edge","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.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"37ad2bb11e9de92cb7b94548705eeedd87f7d392","lessThan":"19cca7c36055906b3cff3e297618ee8a50cde25d","status":"affected","versionType":"git"},{"version":"8674e2db06cff6b50f2216eed9a761d15425bb34","lessThan":"12c064bcfa56e3631be9f5336ee113b7f849959a","status":"affected","versionType":"git"},{"version":"ce01a4e5cfac7adbe0be565f90cd32ecbb2f8337","lessThan":"a0cd9e22f8faed30a8da8be357c51bd8b3074ee9","status":"affected","versionType":"git"},{"version":"ee861486e377edc55361c08dcbceab3f6b6577bd","lessThan":"671b7b9a660ef15b25faa3df161205b9dc8d1eb2","status":"affected","versionType":"git"},{"version":"ee861486e377edc55361c08dcbceab3f6b6577bd","lessThan":"387b1baefbb776e3f48dc2261e77a49213f470f7","status":"affected","versionType":"git"},{"version":"928d354ae3557e8f755a227e67be88034eb3cd7f","status":"affected","versionType":"git"},{"version":"8a800497d9f6c2ec9c2c1ba7b71d0ac2ea7f7bbe","status":"affected","versionType":"git"},{"version":"de1055e7f9e67af32b1f3376066272b04e5223c0","status":"affected","versionType":"git"},{"version":"d846d83bdacbd8f14fc45c63b8c1d22608452e1c","status":"affected","versionType":"git"},{"version":"6.6.148","lessThan":"6.6.160","status":"affected","versionType":"semver"},{"version":"6.12.101","lessThan":"6.12.114","status":"affected","versionType":"semver"},{"version":"6.18.42","lessThan":"6.18.57","status":"affected","versionType":"semver"},{"version":"5.10.265","lessThan":"5.11","status":"affected","versionType":"semver"},{"version":"5.15.216","lessThan":"5.16","status":"affected","versionType":"semver"},{"version":"6.1.183","lessThan":"6.2","status":"affected","versionType":"semver"},{"version":"7.0.10","lessThan":"7.1","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"7.1","status":"affected"},{"version":"0","lessThan":"7.1","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.114","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.57","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"19cca7c36055906b3cff3e297618ee8a50cde25d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"12c064bcfa56e3631be9f5336ee113b7f849959a","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"671b7b9a660ef15b25faa3df161205b9dc8d1eb2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"387b1baefbb776e3f48dc2261e77a49213f470f7","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.6.160","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.12.114","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.18.57","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5.11","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","source_modified_at":"2026-10-21T12:54:27.055Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5.16","basis":"first unaffected version stated in the CVE record"},{"source":"CVE 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List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98085","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:54:27.055Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98085","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/19cca7c36055906b3cff3e297618ee8a50cde25d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/12c064bcfa56e3631be9f5336ee113b7f849959a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a0cd9e22f8faed30a8da8be357c51bd8b3074ee9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/671b7b9a660ef15b25faa3df161205b9dc8d1eb2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/387b1baefbb776e3f48dc2261e77a49213f470f7"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:54:27.055Z","content_hash":"b86eeef225f88303b982cc23c39dde34be0a52036ef904c59418f369a14315d3"}}