{"id":"CVE-2026-98634","published":"2026-10-18T16:17:16.507","lastModified":"2026-10-19T10:19:27.657","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: sd_zbc: Reject disks with too many zones\n\nsd_zbc_read_zones() computes the number of zones with 64-bit arithmetic and\nstores the result in the unsigned int nr_zones field of struct\nzoned_disk_info, silently truncating counts that exceed 32 bits. The\ntruncated count is later used to size per-zone resources, while the device\nmay still report more zones than fit.\n\nMoreover, sd_zbc_report_zones() counts the reported zones with a signed int\nzone_idx, which overflows past INT_MAX. Reject devices reporting more than\nINT_MAX zones at scan time; such a device is not realistic for any medium\nthat exists today, and accepting it produces inconsistent zone bookkeeping.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0af16d8be3ec7ff28bb56a0da79c9aed66ac2c3b","tags":[]},{"url":"https://git.kernel.org/stable/c/3ddf8383b54456f19fd73d3cebed81bd250c7388","tags":[]},{"url":"https://git.kernel.org/stable/c/b6ec0f79745967c751c85df373062c8d15e45fc4","tags":[]},{"url":"https://git.kernel.org/stable/c/d8791ae55d85dfaeafa20ea48365482a0cc5a107","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}