CVE-2025-38405

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Nvmet uses bio_init for inline bios.\n\nUninit the inline bio to complete deallocation of integrity in bio."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The leak is driven entirely by NVMe commands received by the nvmet target from a remote host, and the affected metadata/PI path is only reachable via nvmet-rdma (the sole transport setting NVMF_METADATA_SUPPORTED), which runs over routable RoCEv2/iWARP fabrics. No local access to the target is needed.\nAC:L - Every read/write command carrying protection information leaks a bip allocation with 100% reliability \u2014 no race, no memory-layout dependency, and the attacker fully controls the I/O size that selects the vulnerable inline-bio path. Repetition to exhaust memory is unconstrained.\nPR:N - NVMe-oF requires no authentication by default; the target admits hosts based on a client-supplied, trivially spoofable host NQN or with allow_any_host enabled, so an unauthenticated remote peer can establish a queue and issue I/O.\nUI:N - The leak occurs purely from processing attacker-sent NVMe I/O commands; no action by any local user or administrator is required once the target is serving.\nS:U - The leaked kernel slab memory and its consequences are confined to the kernel of the target host; no security boundary such as a hypervisor or IOMMU domain is crossed.\nC:N - The orphaned bio_integrity_payload is never re-read or exposed, and no out-of-bounds or uninitialized data is returned to the attacker, so there is no information disclosure.\nI:N - bio_init() resets bi_integrity to NULL on reuse, so the leak causes no use-after-free, double-free, or any other memory corruption \u2014 no kernel data is modified.\nA:H - The leak is unbounded and driven at line-rate I/O speed by the remote attacker, so sustained traffic exhausts kernel slab memory leading to OOM kills, allocation failures and system hang/panic on the storage target."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/target/nvmet.h"], "versions": [{"version": "bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f", "lessThan": "431e58d56fcb5ff1f9eb630724a922e0d2a941df", "status": "affected", "versionType": "git"}, {"version": "bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f", "lessThan": "2e2028fcf924d1c6df017033c8d6e28b735a0508", "status": "affected", "versionType": "git"}, {"version": "bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f", "lessThan": "190f4c2c863af7cc5bb354b70e0805f06419c038", "status": "affected", "versionType": "git"}, {"version": "64149da0fddbbfe43e11c0348d8c8b4171dae3a2", "status": "affected", "versionType": "git"}, {"version": "6.10.10", "lessThan": "6.11", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/target/nvmet.h"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.37", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.6", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.12.37"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.15.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10.10"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/431e58d56fcb5ff1f9eb630724a922e0d2a941df"}, {"url": "https://git.kernel.org/stable/c/2e2028fcf924d1c6df017033c8d6e28b735a0508"}, {"url": "https://git.kernel.org/stable/c/190f4c2c863af7cc5bb354b70e0805f06419c038"}], "title": "nvmet: fix memory leak of bio integrity", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-38405", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-15T21:50:03.788370Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:52:15.336Z"}}]}}

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No local access to the target is needed.\nAC:L - Every read/write command carrying protection information leaks a bip allocation with 100% reliability \u2014 no race, no memory-layout dependency, and the attacker fully controls the I/O size that selects the vulnerable inline-bio path. Repetition to exhaust memory is unconstrained.\nPR:N - NVMe-oF requires no authentication by default; the target admits hosts based on a client-supplied, trivially spoofable host NQN or with allow_any_host enabled, so an unauthenticated remote peer can establish a queue and issue I/O.\nUI:N - The leak occurs purely from processing attacker-sent NVMe I/O commands; no action by any local user or administrator is required once the target is serving.\nS:U - The leaked kernel slab memory and its consequences are confined to the kernel of the target host; no security boundary such as a hypervisor or IOMMU domain is crossed.\nC:N - The orphaned bio_integrity_payload is never re-read or exposed, and no out-of-bounds or uninitialized data is returned to the attacker, so there is no information disclosure.\nI:N - bio_init() resets bi_integrity to NULL on reuse, so the leak causes no use-after-free, double-free, or any other memory corruption \u2014 no kernel data is modified.\nA:H - The leak is unbounded and driven at line-rate I/O speed by the remote attacker, so sustained traffic exhausts kernel slab memory leading to OOM kills, allocation failures and system hang/panic on the storage target."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f", "lessThan": "431e58d56fcb5ff1f9eb630724a922e0d2a941df", "versionType": "git"}, {"status": "affected", "version": "bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f", "lessThan": "2e2028fcf924d1c6df017033c8d6e28b735a0508", "versionType": "git"}, {"status": "affected", "version": "bf4c89fc8797f5c0964a0c3d561fbe7e8483b62f", "lessThan": "190f4c2c863af7cc5bb354b70e0805f06419c038", "versionType": "git"}, {"status": "affected", "version": "64149da0fddbbfe43e11c0348d8c8b4171dae3a2", "versionType": "git"}, {"status": "affected", "version": "6.10.10", "lessThan": "6.11", "versionType": "semver"}], "programFiles": ["drivers/nvme/target/nvmet.h"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"status": "unaffected", "version": "0", "lessThan": "6.11", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.37", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.15.6", "versionType": "semver", "lessThanOrEqual": "6.15.*"}, {"status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/nvme/target/nvmet.h"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/431e58d56fcb5ff1f9eb630724a922e0d2a941df"}, {"url": "https://git.kernel.org/stable/c/2e2028fcf924d1c6df017033c8d6e28b735a0508"}, {"url": "https://git.kernel.org/stable/c/190f4c2c863af7cc5bb354b70e0805f06419c038"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix memory leak of bio integrity\n\nIf nvmet receives commands with metadata there is a continuous memory\nleak of kmalloc-128 slab or more precisely bio->bi_integrity.\n\nSince commit bf4c89fc8797 (\"block: don't call bio_uninit from bio_endio\")\neach user of bio_init has to use bio_uninit as well. Otherwise the bio\nintegrity is not getting free. Nvmet uses bio_init for inline bios.\n\nUninit the inline bio to complete deallocation of integrity in bio."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.37", "versionStartIncluding": "6.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.15.6", "versionStartIncluding": "6.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.16", "versionStartIncluding": "6.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "6.10.10"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:01:38.515Z"}}}, "cveMetadata": {"cveId": "CVE-2025-38405", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:52:15.336Z", "dateReserved": "2025-04-16T04:51:24.012Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-07-25T13:12:07.926Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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Otherwise the bio\nintegrity is not getting free. Nvmet uses bio_init for inline bios.\n\nUninit the inline bio to complete deallocation of integrity in bio."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nvmet: se corrige una fuga de memoria de la integridad de la bio. Si nvmet recibe comandos con metadatos, se produce una fuga de memoria continua de la slab kmalloc-128 o, m\u00e1s precisamente, bio->bi_integrity. Desde el commit bf4c89fc8797 (\"bloqueo: no llamar a bio_uninit desde bio_endio\"), cada usuario de bio_init debe usar tambi\u00e9n bio_uninit. De lo contrario, la integridad de la bio no se libera. nvmet usa bio_init para la bios en l\u00ednea. Desinicie la bios en l\u00ednea para completar la desasignaci\u00f3n de la integridad en la bio."}], "id": "CVE-2025-38405", "lastModified": "2026-10-15T22:18:40.150", "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"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-38405", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:50:03.788370Z", "version": "2.0.3"}}]}, "published": "2025-07-25T14:15:32.077", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/190f4c2c863af7cc5bb354b70e0805f06419c038"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e2028fcf924d1c6df017033c8d6e28b735a0508"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/431e58d56fcb5ff1f9eb630724a922e0d2a941df"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: nvmet: fix memory leak of bio integrity", "id": "2383399", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2383399"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnvmet: fix memory leak of bio integrity\nIf nvmet receives commands with metadata there is a continuous memory\nleak of kmalloc-128 slab or more precisely bio->bi_integrity.\nSince commit bf4c89fc8797 (\"block: don't call bio_uninit from bio_endio\")\neach user of bio_init has to use bio_uninit as well. Otherwise the bio\nintegrity is not getting free. Nvmet uses bio_init for inline bios.\nUninit the inline bio to complete deallocation of integrity in bio."], "name": "CVE-2025-38405", "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": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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": "2025-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38405\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38405\nhttps://lore.kernel.org/linux-cve-announce/2025072511-CVE-2025-38405-014e@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-28T12:45:54.752297+00:00", "updated": "2025-07-28T12:45:54.752373+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}