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{"bugzilla": {"description": "kernel: ksmbd: fix incorrect validation for num_aces field of smb_acl", "id": "2356924", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2356924"}, "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-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nksmbd: fix incorrect validation for num_aces field of smb_acl\nparse_dcal() validate num_aces to allocate posix_ace_state_array.\nif (num_aces > ULONG_MAX / sizeof(struct smb_ace *))\nIt is an incorrect validation that we can create an array of size ULONG_MAX.\nsmb_acl has ->size field to calculate actual number of aces in request buffer\nsize. Use this to check invalid num_aces."], "name": "CVE-2025-21994", "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": "2025-04-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21994\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21994\nhttps://lore.kernel.org/linux-cve-announce/2025040214-CVE-2025-21994-44bf@gregkh/T"], "threat_severity": "Moderate"}

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