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{"bugzilla": {"description": "kernel: io_uring: use-after-free vulnerability in io_file_get_fixed", "id": "2186621", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2186621"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escalation.\nThe io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered.\nWe recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8.", "A flaw was found in the io_uring subsystem of the Linux kernel. The io_file_get_fixed function lacks the presence of ctx->uring_lock, which can lead to a use-after-free vulnerability due to a race condition with fixed files getting unregistered. This flaw allows local privilege escalation."], "name": "CVE-2023-1872", "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": "2023-04-13T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-1872\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-1872"], "statement": "Shipping releases of Red Hat Enterprise Linux kernels are not affected by this flaw, as they do not include support for the `io_uring` subsystem (CONFIG_IO_URING is not set).", "threat_severity": "Important"}