{"cve":"CVE-2026-90324","nvd":{"published":"2026-09-17T17:17:30.410","modified":"2026-10-21T13:20:50.003","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nublk: check import_ubuf() return value\n\nimport_ubuf() can fail if the address range (provided by the userspace\nublk server) is outside the allowed user address space. Return that 0\nbytes were copied if import_ubuf() fails rather than passing an\nuninitialized struct iov_iter to ublk_copy_user_pages().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/0121c84adb6a4cd6f7560b5895bd88f9899bbc1f","https://git.kernel.org/stable/c/27ff6e8703f7a7160c728501da2f8ef8e7bb6b2f","https://git.kernel.org/stable/c/3831568792af75b6523fa93bb91560e29189cf55","https://git.kernel.org/stable/c/5ac6019cb78e98c9608fda72726b36ddf8474dd7","https://git.kernel.org/stable/c/7f97c762b5f6e0005c5c7d040ded73bf7fb3587e"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-90324","score":0.00175,"percentile":0.06965,"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."]}