{"id":"CVE-2026-72439","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid10: fix writes_pending leak on write request failures\n\nraid10_make_request() acquires a writes_pending reference with\nmd_write_start() before dispatching write r…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid10: fix writes_pending leak on write request failures\n\nraid10_make_request() acquires a writes_pending reference with\nmd_write_start() before dispatching write r…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= c9aa889b035fca4598ae985a0f0c76ebbb547ad2 < c642583adc136d4c70ce3c65c3f43e847d26c776","Linux >= c9aa889b035fca4598ae985a0f0c76ebbb547ad2 < f94031c94eaebe14a7c9e91720064de0c5a54a6c","Linux >= c9aa889b035fca4598ae985a0f0c76ebbb547ad2 < e045d6ed33f8faa3e3dd6dc33c62ec01e3ad275d","Linux 39db562b3fedb93978a7e42dd216b306740959f8","Linux >= 5.15.111 < 5.16","Linux 5.17"],"published":"2026-08-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:43.690","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72439","references":[{"url":"https://git.kernel.org/stable/c/c642583adc136d4c70ce3c65c3f43e847d26c776","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e045d6ed33f8faa3e3dd6dc33c62ec01e3ad275d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f94031c94eaebe14a7c9e91720064de0c5a54a6c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72439.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-72439"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2516472"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72439"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72439"},{"url":"https://lore.kernel.org/linux-cve-announce/2026081529-CVE-2026-72439-99a9@gregkh/T"},{"url":"https://git.kernel.org/stable/c/f076460c5205c9687059e5a3afeed37d2f2ceb6b"},{"url":"https://git.kernel.org/stable/c/b6667d925c274910423385042edf18f6788dbceb"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00175,"epssPercentile":0.06996,"ingestedAt":"2026-10-15T11:00:41.682Z","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-911"],"slug":"CVE-2026-72439","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid10: fix writes_pending leak on write request failures\n\nraid10_make_request() acquires a writes_pending reference with\nmd_write_start() before dispatching write requests. Several failure\npaths in raid10_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 raid10_write_request() return a status indicating whether the write\nrequest was successfully queued. This allows raid10_make_request() to\nrelease the writes_pending reference with md_write_end() when a write\nrequest fails.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72439.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":224253,"id":"CVE-2026-72439","ts":1792325044872,"field":"cvss","old":null,"new":"5.5"},{"seq":224252,"id":"CVE-2026-72439","ts":1792325044872,"field":"severity","old":"none","new":"medium"}]}