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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-98634

scsi: sd_zbc: Reject disks with too many zones

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: sd_zbc: Reject disks with too many zones sd_zbc_read_zones() computes the number of zones with 64-bit arithmetic and stores the result in the unsigned int nr_zones field of struct zoned_disk_info, silently truncating counts that exceed 32 bits. The truncated count is later used to size per-zone resources, while the device may still report more zones than fit. Moreover, sd_zbc_report_zones() counts the reported zones with a signed int zone_idx, which overflows past INT_MAX. Reject devices reporting more than INT_MAX zones at scan time; such a device is not realistic for any medium that exists today, and accepting it produces inconsistent zone bookkeeping.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 89d9475610771b5e5fe1879075f0fc9ba6e3755f to < d8791ae55d85dfaeafa20ea48365482a0cc5a107affected
  • 89d9475610771b5e5fe1879075f0fc9ba6e3755f to < 0af16d8be3ec7ff28bb56a0da79c9aed66ac2c3baffected
  • 89d9475610771b5e5fe1879075f0fc9ba6e3755f to < 3ddf8383b54456f19fd73d3cebed81bd250c7388affected
  • 89d9475610771b5e5fe1879075f0fc9ba6e3755f to < b6ec0f79745967c751c85df373062c8d15e45fc4affected

Linux Linux

Default version status: affected

  • 4.10affected
  • 0 to < 4.10unaffected
  • 6.12.112 to ≤ 6.12.*unaffected
  • 6.18.55 to ≤ 6.18.*unaffected
  • 7.2.9 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References