{"api_version":"1","generated_at":"2026-10-21T18:43:02+00:00","cve":"CVE-2026-98585","urls":{"html":"https://cve.report/CVE-2026-98585","api":"https://cve.report/api/cve/CVE-2026-98585.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98585","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98585"},"summary":{"title":"eth: fbnic: Avoid rounding zero ring sizes","description":"In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: Avoid rounding zero ring sizes\n\nroundup_pow_of_two() is undefined for zero. ethtool permits a zero ring\nsize to reach the driver, where the minimum-size check should reject it.\n\nLeave zero unchanged while rounding nonzero ring sizes. The minimum-size\ncheck then rejects zero deterministically without changing the established\nbehavior for other values.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:11","updated_at":"2026-10-19 10:19:19"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/491aa3167ae02f219cb2d2de6f4196d28dca03be","name":"https://git.kernel.org/stable/c/491aa3167ae02f219cb2d2de6f4196d28dca03be","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0160953d8eec75c3c55562158c46442ff1fd410b","name":"https://git.kernel.org/stable/c/0160953d8eec75c3c55562158c46442ff1fd410b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/92c9f2ea634d92adff5403d231ebeda683c5685a","name":"https://git.kernel.org/stable/c/92c9f2ea634d92adff5403d231ebeda683c5685a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98585","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98585","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6cbf18a05c06090d867ef417a2a30b214d42d171 92c9f2ea634d92adff5403d231ebeda683c5685a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6cbf18a05c06090d867ef417a2a30b214d42d171 491aa3167ae02f219cb2d2de6f4196d28dca03be git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6cbf18a05c06090d867ef417a2a30b214d42d171 0160953d8eec75c3c55562158c46442ff1fd410b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.55 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.9 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"92c9f2ea634d92adff5403d231ebeda683c5685a","status":"affected","version":"6cbf18a05c06090d867ef417a2a30b214d42d171","versionType":"git"},{"lessThan":"491aa3167ae02f219cb2d2de6f4196d28dca03be","status":"affected","version":"6cbf18a05c06090d867ef417a2a30b214d42d171","versionType":"git"},{"lessThan":"0160953d8eec75c3c55562158c46442ff1fd410b","status":"affected","version":"6cbf18a05c06090d867ef417a2a30b214d42d171","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.55","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.9","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":"6.18.55","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.9","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: Avoid rounding zero ring sizes\n\nroundup_pow_of_two() is undefined for zero. ethtool permits a zero ring\nsize to reach the driver, where the minimum-size check should reject it.\n\nLeave zero unchanged while rounding nonzero ring sizes. The minimum-size\ncheck then rejects zero deterministically without changing the established\nbehavior for other values."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:22:10.939Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/92c9f2ea634d92adff5403d231ebeda683c5685a"},{"url":"https://git.kernel.org/stable/c/491aa3167ae02f219cb2d2de6f4196d28dca03be"},{"url":"https://git.kernel.org/stable/c/0160953d8eec75c3c55562158c46442ff1fd410b"}],"title":"eth: fbnic: Avoid rounding zero ring sizes","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98585","datePublished":"2026-10-18T15:18:58.018Z","dateReserved":"2026-09-25T10:25:14.358Z","dateUpdated":"2026-10-19T09:22:10.939Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:11","lastModifiedDate":"2026-10-19 10:19:19","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98585","Ordinal":"1","Title":"eth: fbnic: Avoid rounding zero ring sizes","CVE":"CVE-2026-98585","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98585","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: Avoid rounding zero ring sizes\n\nroundup_pow_of_two() is undefined for zero. ethtool permits a zero ring\nsize to reach the driver, where the minimum-size check should reject it.\n\nLeave zero unchanged while rounding nonzero ring sizes. The minimum-size\ncheck then rejects zero deterministically without changing the established\nbehavior for other values.","Type":"Description","Title":"eth: fbnic: Avoid rounding zero ring sizes"}]}}}