{"uuid": "69e12a37-2334-4869-aa97-13e28be4c7d0", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-21724", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/5638", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2025-21724\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\niommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index()\n\nResolve a UBSAN shift-out-of-bounds issue in iova_bitmap_offset_to_index()\nwhere shifting the constant \"1\" (of type int) by bitmap->mapped.pgshift\n(an unsigned long value) could result in undefined behavior.\n\nThe constant \"1\" defaults to a 32-bit \"int\", and when \"pgshift\" exceeds\n31 (e.g., pgshift = 63) the shift operation overflows, as the result\ncannot be represented in a 32-bit type.\n\nTo resolve this, the constant is updated to \"1UL\", promoting it to an\nunsigned long type to match the operand's type.\n\ud83d\udccf Published: 2025-02-27T02:07:31.630Z\n\ud83d\udccf Modified: 2025-02-27T02:07:31.630Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/44d9c94b7a3f29a3e07c4753603a35e9b28842a3\n2. https://git.kernel.org/stable/c/38ac76fc06bc6826a3e4b12a98efbe98432380a9\n3. https://git.kernel.org/stable/c/d5d33f01b86af44b23eea61ee309e4ef22c0cdfe\n4. https://git.kernel.org/stable/c/b1f8453b8ff1ab79a03820ef608256c499769cb6\n5. https://git.kernel.org/stable/c/e24c1551059268b37f6f40639883eafb281b8b9c", "creation_timestamp": "2025-02-27T02:25:23.000000Z"}