{"uuid": "2d77b306-0dc2-4b09-a255-263d3a15323a", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-38072", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/18709", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2025-38072\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: 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.\n\ud83d\udccf Published: 2025-06-18T09:33:48.666Z\n\ud83d\udccf Modified: 2025-06-18T09:33:48.666Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/2bd4a938d2eda96ab7288b8fa5aae84a1de8c4ca\n2. https://git.kernel.org/stable/c/396c46d3f59a18ebcc500640e749f16e197d472b\n3. https://git.kernel.org/stable/c/f49c337037df029440a8390380dd35d2cf5924d3\n4. https://git.kernel.org/stable/c/db1aef51b8e66a77f76b1250b914589c31a0a0ed\n5. https://git.kernel.org/stable/c/ea3d95e05e97ea20fd6513f647393add16fce3b2\n6. https://git.kernel.org/stable/c/1d1e1efad1cf049e888bf175a5c6be85d792620c\n7. https://git.kernel.org/stable/c/e14347f647ca6d76fe1509b6703e340f2d5e2716\n8. https://git.kernel.org/stable/c/ef1d3455bbc1922f94a91ed58d3d7db440652959", "creation_timestamp": "2025-06-18T10:40:09.000000Z"}