{"id":"CVE-2026-98634","revision":"20720cc7fd3a49f3b9e36ef7d225f416","records":[{"revision":"20720cc7fd3a49f3b9e36ef7d225f416","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98634","aliases":[],"title":"scsi: sd_zbc: Reject disks with too many zones","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.","state":0,"publishedAt":"2026-10-18T15:20:03.198+00:00","modifiedAt":"2026-10-19T09:23:03.375+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/scsi/sd_zbc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"89d9475610771b5e5fe1879075f0fc9ba6e3755f\",\n                            \"lessThan\": \"d8791ae55d85dfaeafa20ea48365482a0cc5a107\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"89d9475610771b5e5fe1879075f0fc9ba6e3755f\",\n                            \"lessThan\": \"0af16d8be3ec7ff28bb56a0da79c9aed66ac2c3b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"89d9475610771b5e5fe1879075f0fc9ba6e3755f\",\n                            \"lessThan\": \"3ddf8383b54456f19fd73d3cebed81bd250c7388\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"89d9475610771b5e5fe1879075f0fc9ba6e3755f\",\n                            \"lessThan\": \"b6ec0f79745967c751c85df373062c8d15e45fc4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/scsi/sd_zbc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.55\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d8791ae55d85dfaeafa20ea48365482a0cc5a107","https://git.kernel.org/stable/c/0af16d8be3ec7ff28bb56a0da79c9aed66ac2c3b","https://git.kernel.org/stable/c/3ddf8383b54456f19fd73d3cebed81bd250c7388","https://git.kernel.org/stable/c/b6ec0f79745967c751c85df373062c8d15e45fc4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98634","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98634","identifiers":["CVE-2026-98634"]},"retained":false,"historicalAffected":[]}],"coverage":[]}