{"cve":"CVE-2023-54285","nvd":{"published":"2025-12-30T13:16:17.520","modified":"2026-10-15T22:17:57.430","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niomap: Fix possible overflow condition in iomap_write_delalloc_scan\n\nfolio_next_index() returns an unsigned long value which left shifted\nby PAGE_SHIFT could possibly cause an overflow on 32-bit system. Instead\nuse folio_pos(folio) + folio_size(folio), which does this correctly.","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":["CWE-787"],"references":["https://git.kernel.org/stable/c/0c6cf409093f307ee05114f834516730c0da5b21","https://git.kernel.org/stable/c/5c281b0c5d18c8eeb1cfd5023f4adb153e6d1240","https://git.kernel.org/stable/c/eee2d2e6ea5550118170dbd5bb1316ceb38455fb"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:18:08.089039631+00:00"},"epss":{"cve":"CVE-2023-54285","score":0.00179,"percentile":0.07422,"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."]}