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This patch allocate response buffer after\ndecrypting transform request. smb3_decrypt_req() will validate transform\nrequest size and avoid slab-out-of-bound in smb2_allocate_rsp_buf()."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ksmbd: corrige slab-out-of-bounds en smb2_allocate_rsp_buf Si ->ProtocolId es SMB2_TRANSFORM_PROTO_NUM, se podr\u00eda omitir la validaci\u00f3n del tama\u00f1o de la solicitud smb2. Si el tama\u00f1o de la solicitud es menor que sizeof (struct smb2_query_info_req), la lectura de losa fuera de los l\u00edmites puede ocurrir en smb2_allocate_rsp_buf(). Este parche asigna un b\u00fafer de respuesta despu\u00e9s de descifrar la solicitud de transformaci\u00f3n. smb3_decrypt_req() validar\u00e1 el tama\u00f1o de la solicitud de transformaci\u00f3n y evitar\u00e1 la losa fuera de los l\u00edmites en smb2_allocate_rsp_buf()."}], "id": "CVE-2024-26980", "lastModified": "2025-11-04T18:15:56.347", "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-05-01T06:15:15.423", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0977f89722eceba165700ea384f075143f012085"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3160d9734453a40db248487f8204830879c207f1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b80ba648714e6d790d69610cf14656be222d0248"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c119f4ede3fa90a9463f50831761c28f989bfb20"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/da21401372607c49972ea87a6edaafb36a17c325"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0977f89722eceba165700ea384f075143f012085"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3160d9734453a40db248487f8204830879c207f1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b80ba648714e6d790d69610cf14656be222d0248"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c119f4ede3fa90a9463f50831761c28f989bfb20"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/da21401372607c49972ea87a6edaafb36a17c325"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ksmbd: fix slab-out-of-bounds in smb2_allocate_rsp_buf", "id": "2278341", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278341"}, "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"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nksmbd: fix slab-out-of-bounds in smb2_allocate_rsp_buf\nIf ->ProtocolId is SMB2_TRANSFORM_PROTO_NUM, smb2 request size\nvalidation could be skipped. if request size is smaller than\nsizeof(struct smb2_query_info_req), slab-out-of-bounds read can happen in\nsmb2_allocate_rsp_buf(). This patch allocate response buffer after\ndecrypting transform request. smb3_decrypt_req() will validate transform\nrequest size and avoid slab-out-of-bound in smb2_allocate_rsp_buf().", "A flaw was found in the Linux kernel's ksmbd module. Improper size validation can trigger an out-of-bounds read, resulting in a denial of service."], "name": "CVE-2024-26980", "package_state": [{"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": "2024-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26980\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26980\nhttps://lore.kernel.org/linux-cve-announce/2024050141-CVE-2024-26980-4b16@gregkh/T"], "statement": "The ksmbd module is not built in the kernel shipped in Red Hat Enterprise Linux, so it is not affected by this vulnerability.", "threat_severity": "Moderate"}