{"id":"CVE-2025-38072","summary":"libnvdimm/labels: Fix divide error in nd_label_data_init()","details":"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-\u003elsa_size,\n\n3) max_xfer is set to zero (nvdimm driver):\n\ndrivers/nvdimm/label.c: max_xfer = min_t(size_t, ndd-\u003ensarea.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.","modified":"2026-04-02T12:47:47.392283Z","published":"2025-06-18T09:33:48.666Z","related":["SUSE-SU-2025:02249-1","SUSE-SU-2025:02254-1","SUSE-SU-2025:02307-1","SUSE-SU-2025:02333-1","SUSE-SU-2025:02334-1","SUSE-SU-2025:02335-1","SUSE-SU-2025:02538-1","SUSE-SU-2025:02923-1","SUSE-SU-2025:20475-1","SUSE-SU-2025:20483-1","SUSE-SU-2025:20493-1","SUSE-SU-2025:20498-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38072.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1d1e1efad1cf049e888bf175a5c6be85d792620c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2bd4a938d2eda96ab7288b8fa5aae84a1de8c4ca"},{"type":"WEB","url":"https://git.kernel.org/stable/c/396c46d3f59a18ebcc500640e749f16e197d472b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/db1aef51b8e66a77f76b1250b914589c31a0a0ed"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e14347f647ca6d76fe1509b6703e340f2d5e2716"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ea3d95e05e97ea20fd6513f647393add16fce3b2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef1d3455bbc1922f94a91ed58d3d7db440652959"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f49c337037df029440a8390380dd35d2cf5924d3"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38072.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38072"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7d47aad4570e5e6e9a8162bb417ca9b74132f27c"},{"fixed":"2bd4a938d2eda96ab7288b8fa5aae84a1de8c4ca"},{"fixed":"396c46d3f59a18ebcc500640e749f16e197d472b"},{"fixed":"f49c337037df029440a8390380dd35d2cf5924d3"},{"fixed":"db1aef51b8e66a77f76b1250b914589c31a0a0ed"},{"fixed":"ea3d95e05e97ea20fd6513f647393add16fce3b2"},{"fixed":"1d1e1efad1cf049e888bf175a5c6be85d792620c"},{"fixed":"e14347f647ca6d76fe1509b6703e340f2d5e2716"},{"fixed":"ef1d3455bbc1922f94a91ed58d3d7db440652959"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38072.json"}}],"schema_version":"1.7.5"}