{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-38072", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.980Z", "datePublished": "2025-06-18T09:33:48.666Z", "dateUpdated": "2026-01-02T15:30:01.516Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-01-02T15:30:01.516Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibnvdimm/labels: Fix divide error in nd_label_data_init()\n\nIf a faulty CXL memory device returns a broken zero LSA size in its\nmemory device information (Identify Memory Device (Opcode 4000h), CXL\nspec. 3.1, 8.2.9.9.1.1), a divide error occurs in the libnvdimm\ndriver:\n\n Oops: divide error: 0000 [#1] PREEMPT SMP NOPTI\n RIP: 0010:nd_label_data_init+0x10e/0x800 [libnvdimm]\n\nCode and flow:\n\n1) CXL Command 4000h returns LSA size = 0\n2) config_size is assigned to zero LSA size (CXL pmem driver):\n\ndrivers/cxl/pmem.c: .config_size = mds->lsa_size,\n\n3) max_xfer is set to zero (nvdimm driver):\n\ndrivers/nvdimm/label.c: max_xfer = min_t(size_t, ndd->nsarea.max_xfer, config_size);\n\n4) A subsequent DIV_ROUND_UP() causes a division by zero:\n\ndrivers/nvdimm/label.c: /* Make our initial read size a multiple of max_xfer size */\ndrivers/nvdimm/label.c: read_size = min(DIV_ROUND_UP(read_size, max_xfer) * max_xfer,\ndrivers/nvdimm/label.c- config_size);\n\nFix this by checking the config size parameter by extending an\nexisting check."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvdimm/label.c"], "versions": [{"version": "7d47aad4570e5e6e9a8162bb417ca9b74132f27c", "lessThan": "2bd4a938d2eda96ab7288b8fa5aae84a1de8c4ca", 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"https://git.kernel.org/stable/c/ea3d95e05e97ea20fd6513f647393add16fce3b2"}, {"url": "https://git.kernel.org/stable/c/1d1e1efad1cf049e888bf175a5c6be85d792620c"}, {"url": "https://git.kernel.org/stable/c/e14347f647ca6d76fe1509b6703e340f2d5e2716"}, {"url": "https://git.kernel.org/stable/c/ef1d3455bbc1922f94a91ed58d3d7db440652959"}], "title": "libnvdimm/labels: Fix divide error in nd_label_data_init()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:33:40.308Z"}}]}}

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4) Un DIV_ROUND_UP() posterior provoca una divisi\u00f3n por cero: drivers/nvdimm/label.c: /* Hacer que nuestro tama\u00f1o de lectura inicial sea un m\u00faltiplo del tama\u00f1o max_xfer */ drivers/nvdimm/label.c: read_size = min(DIV_ROUND_UP(read_size, max_xfer) * max_xfer, drivers/nvdimm/label.c- config_size); Solucione esto comprobando el par\u00e1metro de tama\u00f1o de configuraci\u00f3n extendiendo una comprobaci\u00f3n existente."}], "id": "CVE-2025-38072", "lastModified": "2025-12-17T18:54:13.900", "metrics": {"cvssMetricV31": [{"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"}]}, "published": "2025-06-18T10:15:40.583", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1d1e1efad1cf049e888bf175a5c6be85d792620c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2bd4a938d2eda96ab7288b8fa5aae84a1de8c4ca"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/396c46d3f59a18ebcc500640e749f16e197d472b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/db1aef51b8e66a77f76b1250b914589c31a0a0ed"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e14347f647ca6d76fe1509b6703e340f2d5e2716"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ea3d95e05e97ea20fd6513f647393add16fce3b2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ef1d3455bbc1922f94a91ed58d3d7db440652959"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f49c337037df029440a8390380dd35d2cf5924d3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: libnvdimm/labels: Fix divide error in nd_label_data_init()", "id": "2373325", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373325"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-369", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nlibnvdimm/labels: Fix divide error in nd_label_data_init()\nIf a faulty CXL memory device returns a broken zero LSA size in its\nmemory device information (Identify Memory Device (Opcode 4000h), CXL\nspec. 3.1, 8.2.9.9.1.1), a divide error occurs in the libnvdimm\ndriver:\nOops: divide error: 0000 [#1] PREEMPT SMP NOPTI\nRIP: 0010:nd_label_data_init+0x10e/0x800 [libnvdimm]\nCode and flow:\n1) CXL Command 4000h returns LSA size = 0\n2) config_size is assigned to zero LSA size (CXL pmem driver):\ndrivers/cxl/pmem.c: .config_size = mds->lsa_size,\n3) max_xfer is set to zero (nvdimm driver):\ndrivers/nvdimm/label.c: max_xfer = min_t(size_t, ndd->nsarea.max_xfer, config_size);\n4) A subsequent DIV_ROUND_UP() causes a division by zero:\ndrivers/nvdimm/label.c: /* Make our initial read size a multiple of max_xfer size */\ndrivers/nvdimm/label.c: read_size = min(DIV_ROUND_UP(read_size, max_xfer) * max_xfer,\ndrivers/nvdimm/label.c- config_size);\nFix this by checking the config size parameter by extending an\nexisting check."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, prevent module libnvdimm from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically."}, "name": "CVE-2025-38072", "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": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "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": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38072\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38072\nhttps://lore.kernel.org/linux-cve-announce/2025061839-CVE-2025-38072-a259@gregkh/T"], "statement": "This patch fixes a divide-by-zero bug in the nd_label_data_init() function of the libnvdimm subsystem. The issue occurs when a faulty or misbehaving CXL memory device reports a zero-sized Label Storage Area (LSA), resulting in division by zero during configuration setup. Because interaction with CXL memory devices and NVDIMM configuration requires administrative privileges (e.g., CAP_SYS_ADMIN), and the attack involves low-level device manipulation, the vulnerability is only exploitable by privileged users.", "threat_severity": "Moderate"}

{"created": "2025-06-23T08:53:48.121765+00:00", "updated": "2025-06-23T08:53:48.121814+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}