{"id":"CVE-2026-93076","summary":"dax/fsdev: clear vmemmap_shift when binding static pgmap","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndax/fsdev: clear vmemmap_shift when binding static pgmap\n\nClear pgmap-\u003evmemmap_shift for static DAX devices. When rebinding a static\ndevice from device_dax (which may set vmemmap_shift based on alignment) to\nfsdev_dax, the stale vmemmap_shift persists on the shared pgmap. Explicitly\nzero it before devm_memremap_pages() so the vmemmap is built for order-0\nfolios as fsdev requires.","modified":"2026-09-19T03:47:27.873353139Z","published":"2026-09-17T16:10:58.370Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93076.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/d298a0513aaf7d48f2a9f4a90041de910750cfcf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e0239229931faf9ca3367e3befcf16f77b2cd45b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93076.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93076"},{"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":"d5406bd458b0ac10b1301a4d5801d85c8f648637"},{"fixed":"d298a0513aaf7d48f2a9f4a90041de910750cfcf"},{"fixed":"e0239229931faf9ca3367e3befcf16f77b2cd45b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93076.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.1.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93076.json"}}],"schema_version":"1.9.0"}