{"cve":"CVE-2026-72440","nvd":{"published":"2026-08-15T06:22:17.843","modified":"2026-10-21T13:19:38.257","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: fix writes_pending and barrier reference leaks on write failures\n\nraid1_make_request() acquires a writes_pending reference with\nmd_write_start() before calling raid1_write_request(). Several failure\npaths in raid1_write_request() complete the bio and return without\nreaching the normal write completion path, causing the corresponding\nmd_write_end() to be skipped.\n\nMake raid1_write_request() return a status indicating whether the write\nrequest was successfully queued. This allows raid1_make_request() to\ncall md_write_end() when raid1_write_request() fails.\n\nAdditionally, if wait_blocked_rdev() fails after wait_barrier()\nsucceeds, the associated barrier reference is not released.\n\nCall allow_barrier() before returning from that path to keep the barrier\naccounting balanced.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","score":7.1},"cwes":[],"references":["https://git.kernel.org/stable/c/7a450460687919e79b5f8503bdeb13ecf4cca311","https://git.kernel.org/stable/c/8e065a1602511282fc0da2dc89445e0eb71a681c","https://git.kernel.org/stable/c/921e2baa626d1504bf30295816aaeb90ac8c82f4","https://git.kernel.org/stable/c/a846affa813013204d0cce0cfdaeb99e8fcce188","https://git.kernel.org/stable/c/bffbbfcbd9393e315a7a4286dcd70e875265db9a"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-72440","score":0.0048,"percentile":0.41111,"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."]}