{"uuid": "3b120a0e-2c73-4ad6-b95f-fab3d19a91cf", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-37984", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/17031", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2025-37984\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP()\n\nHerbert notes that DIV_ROUND_UP() may overflow unnecessarily if an ecdsa\nimplementation's ->key_size() callback returns an unusually large value.\nHerbert instead suggests (for a division by 8):\n\n  X / 8 + !!(X & 7)\n\nBased on this formula, introduce a generic DIV_ROUND_UP_POW2() macro and\nuse it in lieu of DIV_ROUND_UP() for ->key_size() return values.\n\nAdditionally, use the macro in ecc_digits_from_bytes(), whose \"nbytes\"\nparameter is a ->key_size() return value in some instances, or a\nuser-specified ASN.1 length in the case of ecdsa_get_signature_rs().\n\ud83d\udccf Published: 2025-05-20T17:09:18.321Z\n\ud83d\udccf Modified: 2025-05-20T17:09:18.321Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/921b8167f10708e38080f84e195cdc68a7a561f1\n2. https://git.kernel.org/stable/c/b16510a530d1e6ab9683f04f8fb34f2e0f538275", "creation_timestamp": "2025-05-20T17:45:42.000000Z"}