CVE-2025-37947

{"id": "CVE-2025-37947", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-05-20T16:15:32.677", "references": [{"url": "https://git.kernel.org/stable/c/04c8a38c60346bb5a7c49b276de7233f703ce9cb", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/0ca6df4f40cf4c32487944aaf48319cb6c25accc", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7f61da79df86fd140c7768e668ad846bfa7ec8e1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d62ba16563a86aae052f96d270b3b6f78fca154c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e6356499fd216ed6343ae0363f4c9303f02c5034", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/doyensec/KSMBD-CVE-2025-37947/blob/main/CVE-2025-37947.c", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: prevent out-of-bounds stream writes by validating *pos\n\nksmbd_vfs_stream_write() did not validate whether the write offset\n(*pos) was within the bounds of the existing stream data length (v_len).\nIf *pos was greater than or equal to v_len, this could lead to an\nout-of-bounds memory write.\n\nThis patch adds a check to ensure *pos is less than v_len before\nproceeding. If the condition fails, -EINVAL is returned."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: impide escrituras de flujo fuera de los l\u00edmites mediante la validaci\u00f3n de *pos. ksmbd_vfs_stream_write() no validaba si el desplazamiento de escritura (*pos) estaba dentro de los l\u00edmites de la longitud de datos del flujo existente (v_len). Si *pos era mayor o igual que v_len, esto pod\u00eda provocar una escritura en memoria fuera de los l\u00edmites. Este parche a\u00f1ade una comprobaci\u00f3n para garantizar que *pos sea menor que v_len antes de continuar. Si la condici\u00f3n falla, se devuelve -EINVAL."}], "lastModified": "2025-11-03T20:18:42.830", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}