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{"bugzilla": {"description": "kernel: ice: Avoid crash from unnecessary IDA free", "id": "2282905", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282905"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-665", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nice: Avoid crash from unnecessary IDA free\nIn the remove path, there is an attempt to free the aux_idx IDA whether\nit was allocated or not. This can potentially cause a crash when\nunloading the driver on systems that do not initialize support for RDMA.\nBut, this free cannot be gated by the status bit for RDMA, since it is\nallocated if the driver detects support for RDMA at probe time, but the\ndriver can enter into a state where RDMA is not supported after the IDA\nhas been allocated at probe time and this would lead to a memory leak.\nInitialize aux_idx to an invalid value and check for a valid value when\nunloading to determine if an IDA free is necessary."], "name": "CVE-2021-47453", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "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": "2024-05-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47453\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47453\nhttps://lore.kernel.org/linux-cve-announce/2024052243-CVE-2021-47453-2f17@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-12T22:15:48.650885+00:00", "updated": "2025-07-12T22:15:48.650931+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}