CVE-2021-46916

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{"bugzilla": {"description": "kernel: NULL pointer dereference in ethtool loopback test", "id": "2266371", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2266371"}, "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-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nixgbe: Fix NULL pointer dereference in ethtool loopback test\nThe ixgbe driver currently generates a NULL pointer dereference when\nperforming the ethtool loopback test. This is due to the fact that there\nisn't a q_vector associated with the test ring when it is setup as\ninterrupts are not normally added to the test rings.\nTo address this I have added code that will check for a q_vector before\nreturning a napi_id value. If a q_vector is not present it will return a\nvalue of 0.", "A NULL pointer dereference flaw was found in ethtool loopback test in the Linux Kernel. This issue occurs due to a missing q_vector associated with the test ring when it is setup, as interrupts are not normally added to the test rings. Exploiting the vulnerability can result in system crash and denial of service attacks."], "mitigation": {"lang": "en:us", "value": "The vulnerable code is present in ixgbe driver supporting 82598 and 82599 based PCI express 10G network connections. The vulnerability can be mitigated by either not using these chipsets or upgrading to the latest software."}, "name": "CVE-2021-46916", "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": "2024-02-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-46916\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-46916\nhttps://git.kernel.org/stable/c/31166efb1cee348eb6314e9c0095d84cbeb66b9d\nhttps://git.kernel.org/stable/c/758d19098df4b0bbca9f40d6ae6c82c9c18b9bba"], "statement": "Red Hat does not ship the vulnerable version of the kernel in any of its products.", "threat_severity": "Moderate"}

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