{"cve":"CVE-2026-23007","nvd":{"published":"2026-01-25T15:15:55.580","modified":"2026-10-21T13:18:32.977","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: zero non-PI portion of auto integrity buffer\n\nThe auto-generated integrity buffer for writes needs to be fully\ninitialized before being passed to the underlying block device,\notherwise the uninitialized memory can be read back by userspace or\nanyone with physical access to the storage device. If protection\ninformation is generated, that portion of the integrity buffer is\nalready initialized. The integrity data is also zeroed if PI generation\nis disabled via sysfs or the PI tuple size is 0. However, this misses\nthe case where PI is generated and the PI tuple size is nonzero, but the\nmetadata size is larger than the PI tuple. In this case, the remainder\n(\"opaque\") of the metadata is left uninitialized.\nGeneralize the BLK_INTEGRITY_CSUM_NONE check to cover any case when the\nmetadata is larger than just the PI tuple.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-908"],"references":["https://git.kernel.org/stable/c/765bf0a5880777c04ae98fc2a9f3b995737b3a64","https://git.kernel.org/stable/c/ca22c566b89164f6e670af56ecc45f47ef3df819","https://git.kernel.org/stable/c/d6072557b90e0c557df319a56f4a9dc482706d2c"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-23007","score":0.00202,"percentile":0.10013,"date":"2026-10-25"},"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."]}