{"cve":"CVE-2026-98635","nvd":{"published":"2026-10-18T16:17:16.607","modified":"2026-10-19T10:19:27.747","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: block: Fix zones_cond out-of-bounds write on zone report\n\nblk_revalidate_disk_zones() sizes the zones_cond array from the disk\ncapacity and zone size, but the index used by blk_revalidate_zone_cond()\ncomes from the device-driven report_zones() walk and is never checked\nagainst the array size. A device reporting more zones than fit the array\nmakes blk_zone_set_cond() write out of bounds.\n\nOne way to reach this is a zone count exceeding 32 bits: both\nblk_revalidate_zone_args.nr_zones and struct zoned_disk_info.nr_zones are\nunsigned int, so a disk advertising more than UINT_MAX zones (e.g.  2^32 +\n1024 zones of one 512-byte logical block) gets its zone count truncated to\na small value, undersizing the array while the report walk keeps counting\nupward.\n\nCheck the index against the array size before storing the zone condition,\nand refuse to revalidate when the zone count does not fit 32 bits.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/7c431d61b69a3fd0784c20aa4cd0b8fb501b5653","https://git.kernel.org/stable/c/ca688bb207957cffa5a8cad207329b0dcac1f2c0"],"products":[],"source":"nvd","synced_at":"2026-10-19T23:00:53.604569364+00:00"},"epss":{"cve":"CVE-2026-98635","score":0.00173,"percentile":0.06646,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}