{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72438", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.929Z", "datePublished": "2026-08-15T05:56:51.384Z", "dateUpdated": "2026-10-30T12:29:23.144Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:29:23.144Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid10: fix writes_pending and barrier reference leaks on discard failures\n\nraid10_make_request() acquires a writes_pending reference with\nmd_write_start() before calling raid10_handle_discard(). 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Several failure\npaths in raid10_handle_discard() complete the bio and return without\nreleasing the corresponding reference, causing md_write_end() to be\nskipped.\n\nCall md_write_end() before returning from these failure paths to keep\nwrites_pending accounting balanced.\n\nAdditionally, discard split allocation failures can occur after\nwait_barrier() succeeds. Those paths return without calling\nallow_barrier(), leaking the associated barrier reference.\n\nRelease the barrier before returning from those paths."}], "id": "CVE-2026-72438", "lastModified": "2026-10-30T13:19:52.197", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72438", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T18:50:00.249923Z", "version": "2.0.3"}}]}, "published": "2026-08-15T06:22:17.660", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/11b35d1906a7277a3d64afe34224133b44327328"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2d264c00beadcc67f16d683ab27eed28c047ba2e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/393d687131d8aa8c7e4de2cb494438e145d20fc2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/80ac31cce55432034a9eb98262c92ace7866e494"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1324b41dabd26787559efaeb430643c627c1eb0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fea33968592559a55a3f5a96a6386bebcaf988a8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: md/raid10: fix writes_pending and barrier reference leaks on discard failures", "id": "2516425", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516425"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's multiple device (MD) driver, specifically in the RAID10 implementation. This vulnerability occurs due to reference leaks in the `writes_pending` and `barrier` mechanisms during discard failures. An attacker could potentially exploit this by triggering discard failures, leading to resource exhaustion and a Denial of Service (DoS) on the affected system."], "name": "CVE-2026-72438", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72438\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72438\nhttps://lore.kernel.org/linux-cve-announce/2026081528-CVE-2026-72438-f2cb@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c9aa889b035fca4598ae985a0f0c76ebbb547ad2,d1324b41dabd26787559efaeb430643c627c1eb0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c9aa889b035fca4598ae985a0f0c76ebbb547ad2,393d687131d8aa8c7e4de2cb494438e145d20fc2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "39db562b3fedb93978a7e42dd216b306740959f8"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.15.111,5.16)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T12:00:05.302857+00:00", "updated": "2026-08-18T14:30:05.126020+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-675", "CWE-772"]}