{"id":"CVE-2026-72440","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-72440","generatedAt":"2026-10-28T04:46:21.614Z","title":"In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix writes_pending and barrier reference leaks on write failures raid1_make_request() acquires a writes_pending reference with md_write_start() before calling…","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.","published":"2026-08-15T06:22:18.000Z","lastModified":"2026-10-21T13:19:38.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H"},"cwe":[],"affected":[],"epss":{"score":0.0048,"percentile":0.41206,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/7a450460687919e79b5f8503bdeb13ecf4cca311","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8e065a1602511282fc0da2dc89445e0eb71a681c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/921e2baa626d1504bf30295816aaeb90ac8c82f4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a846affa813013204d0cce0cfdaeb99e8fcce188","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bffbbfcbd9393e315a7a4286dcd70e875265db9a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72440","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}