{"id":"CVE-2026-98585","summary":"eth: fbnic: Avoid rounding zero ring sizes","details":"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.","modified":"2026-10-20T02:31:04.499176961Z","published":"2026-10-18T15:18:58.018Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98585.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0160953d8eec75c3c55562158c46442ff1fd410b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/491aa3167ae02f219cb2d2de6f4196d28dca03be"},{"type":"WEB","url":"https://git.kernel.org/stable/c/92c9f2ea634d92adff5403d231ebeda683c5685a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98585.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98585"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6cbf18a05c06090d867ef417a2a30b214d42d171"},{"fixed":"92c9f2ea634d92adff5403d231ebeda683c5685a"},{"fixed":"491aa3167ae02f219cb2d2de6f4196d28dca03be"},{"fixed":"0160953d8eec75c3c55562158c46442ff1fd410b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98585.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"6.18.55"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98585.json"}}],"schema_version":"1.9.0"}