{"cve":"CVE-2026-68340","nvd":{"published":"2026-08-10T13:20:24.497","modified":"2026-08-19T17:20:43.940","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: occ: validate poll response sensor blocks\n\nThe OCC poll response parser walks a counted list of sensor data blocks.\nIt used the static backing-array capacity as the parse boundary, but a\ntransport response makes only data_length bytes current and valid. A\ntruncated response can therefore make the parser consume a block header or\nblock extent outside the current response.\n\nUse data_length as the parent boundary, prove the fixed poll header and\neach current block header before reading them, and prove the complete block\nbefore advancing. Keep parsed sensor metadata local until the complete\nresponse has passed validation, then publish it. Propagate\nmalformed-response errors before publishing the OCC as active.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","score":7.7},"cwes":[],"references":["https://git.kernel.org/stable/c/112525534ab5cff482d35897ca4ca11fd3a76f46","https://git.kernel.org/stable/c/1902e9572901d37901e3db1f3f6b0885f4e49a66","https://git.kernel.org/stable/c/538d862cc0dbd5c732fe26d5aad98eae039e6676","https://git.kernel.org/stable/c/54cb78eceb4e286ccd5a5c01a4632157860d47f0","https://git.kernel.org/stable/c/6e6c72c37433640514db325408bd6913ad28fe69"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:54.990491175+00:00"},"epss":{"cve":"CVE-2026-68340","score":0.00148,"percentile":0.03979,"date":"2026-10-31"},"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."]}