CVE-2025-37962

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When the bounds check fails, the function\nreturns NULL without freeing the previously allocated lease_ctx_info\nstructure.\n\nThis patch fixes the issue by adding kfree(lreq) before returning NULL\nin both boundary check cases."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: correcci\u00f3n de fuga de memoria en parse_lease_state(). El parche anterior, que a\u00f1ad\u00eda la comprobaci\u00f3n de los l\u00edmites para el contexto de creaci\u00f3n de arrendamiento, introduc\u00eda una fuga de memoria. Cuando la comprobaci\u00f3n de los l\u00edmites falla, la funci\u00f3n devuelve NULL sin liberar la estructura lease_ctx_info previamente asignada. Este parche corrige el problema a\u00f1adiendo kfree(lreq) antes de devolver NULL en ambos casos de comprobaci\u00f3n de los l\u00edmites."}], "id": "CVE-2025-37962", "lastModified": "2026-06-17T09:15:47.067", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-05-20T16:15:34.473", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2148d34371b06dac696c0497a98a6bf905a51650"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/829e19ef741d9e9932abdc3bee5466195e0852cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/af9e2d4732a548db8f6f5a90c2c20a789a3d7240"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb4447bcce915b43b691123118893fca4f372a8f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/facf22c1a394c1e023dab5daf9a494f722771e1c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ksmbd: fix memory leak in parse_lease_state()", "id": "2367573", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2367573"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nksmbd: fix memory leak in parse_lease_state()\nThe previous patch that added bounds check for create lease context\nintroduced a memory leak. When the bounds check fails, the function\nreturns NULL without freeing the previously allocated lease_ctx_info\nstructure.\nThis patch fixes the issue by adding kfree(lreq) before returning NULL\nin both boundary check cases."], "name": "CVE-2025-37962", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-37962\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-37962\nhttps://lore.kernel.org/linux-cve-announce/2025052005-CVE-2025-37962-9f38@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-06-24T09:44:23.521379+00:00", "updated": "2025-06-24T09:44:23.521426+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}