{"schema":"threatline.record/2","record":{"id":"CVE-2026-98031","aliases":[],"summary":"nexthop: Initialize extack in remove_nh_grp_entry()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnexthop: Initialize extack in remove_nh_grp_entry()\n\nremove_nh_grp_entry() prints the extack message when a listener fails\nto replace the reduced nexthop group. However, extack is not\ninitialized and listeners are not required to set a message when\nreturning an error. Neither netdevsim nor mlxsw do so when an\nallocation fails, resulting in the dereference of an uninitialized\nstack pointer.\n\nFix by zero-initializing extack, as was done in commit 6347c5314cee\n(\"nexthop: initialize extack in nh_res_bucket_migrate()\").","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98031","source_modified_at":"2026-10-19T09:12:36.306Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"833a1065eeb14437a9a0dfa9dad06ea09894e0b5","lessThan":"35d9ec61466109ef0c2de87067338d929f629527","status":"affected","versionType":"git"},{"version":"833a1065eeb14437a9a0dfa9dad06ea09894e0b5","lessThan":"704319510af2179cf03955747d714ab291075c25","status":"affected","versionType":"git"},{"version":"833a1065eeb14437a9a0dfa9dad06ea09894e0b5","lessThan":"17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a","status":"affected","versionType":"git"},{"version":"833a1065eeb14437a9a0dfa9dad06ea09894e0b5","lessThan":"030c878eaedf0449e2b5401a0a0146d0afcc645e","status":"affected","versionType":"git"},{"version":"833a1065eeb14437a9a0dfa9dad06ea09894e0b5","lessThan":"d643cea4248668dc493c513aa7cbc6505eb1a4a9","status":"affected","versionType":"git"},{"version":"833a1065eeb14437a9a0dfa9dad06ea09894e0b5","lessThan":"d80677ad7aa5bebfccfd58caa4852b65abe70561","status":"affected","versionType":"git"},{"version":"833a1065eeb14437a9a0dfa9dad06ea09894e0b5","lessThan":"5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98031","source_modified_at":"2026-10-19T09:12:36.306Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.11","status":"affected"},{"version":"0","lessThan":"5.11","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","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-2026-98031","source_modified_at":"2026-10-19T09:12:36.306Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"35d9ec61466109ef0c2de87067338d929f629527","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98031","source_modified_at":"2026-10-19T09:12:36.306Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"704319510af2179cf03955747d714ab291075c25","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98031","source_modified_at":"2026-10-19T09:12:36.306Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98031","source_modified_at":"2026-10-19T09:12:36.306Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"030c878eaedf0449e2b5401a0a0146d0afcc645e","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98031","source_modified_at":"2026-10-19T09:12:36.306Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00172,"percentile":0.06319,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:23:47.562Z","modified_at":"2026-10-19T09:12:36.306Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98031","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:12:36.306Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98031","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/35d9ec61466109ef0c2de87067338d929f629527"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/704319510af2179cf03955747d714ab291075c25"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/030c878eaedf0449e2b5401a0a0146d0afcc645e"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d643cea4248668dc493c513aa7cbc6505eb1a4a9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d80677ad7aa5bebfccfd58caa4852b65abe70561"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b"}],"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":"2026-10-19T09:12:36.306Z","content_hash":"24675dfb807adf544d318bc598750fc28a2886714cb424bcc203aed94f1622fd"}}