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{"bugzilla": {"description": "kernel: ksmbd: fix race condition between session lookup and expire", "id": "2267032", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2267032"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-362", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nksmbd: fix race condition between session lookup and expire\nThread A + Thread B\nksmbd_session_lookup | smb2_sess_setup\nsess = xa_load |\n|\n| xa_erase(&conn->sessions, sess->id);\n|\n| ksmbd_session_destroy(sess) --> kfree(sess)\n|\n// UAF! |\nsess->last_active = jiffies |\n+\nThis patch add rwsem to fix race condition between ksmbd_session_lookup\nand ksmbd_expire_session.", "A flaw was found in the ksmbd module in the Linux kernel. A race condition between session lookup and expire can cause a use-after-free, resulting in a denial of service."], "name": "CVE-2023-52480", "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": "2024-02-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52480\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52480\nhttps://lore.kernel.org/linux-cve-announce/2024022922-CVE-2023-52480-ff7f@gregkh/T/#u"], "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"}

{}