CVE-2026-98634None▾ SunlitIn 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_zon…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= 89d9475610771b5e5fe1879075f0fc9ba6e3755f < d8791ae55d85dfaeafa20ea48365482a0cc5a107Linux >= 89d9475610771b5e5fe1879075f0fc9ba6e3755f < 0af16d8be3ec7ff28bb56a0da79c9aed66ac2c3bLinux >= 89d9475610771b5e5fe1879075f0fc9ba6e3755f < 3ddf8383b54456f19fd73d3cebed81bd250c7388Linux >= 89d9475610771b5e5fe1879075f0fc9ba6e3755f < b6ec0f79745967c751c85df373062c8d15e45fc4Linux 4.10Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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