{"cve":"CVE-2021-47164","nvd":{"published":"2024-03-25T10:15:08.577","modified":"2026-06-17T04:16:48.510","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix null deref accessing lag dev\n\nIt could be the lag dev is null so stop processing the event.\nIn bond_enslave() the active/backup slave being set before setting the\nupper dev so first event is without an upper dev.\nAfter setting the upper dev with bond_master_upper_dev_link() there is\na second event and in that event we have an upper dev.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/2e4b0b95a489259f9d35a3db17023061f8f3d587","https://git.kernel.org/stable/c/83026d83186bc48bb41ee4872f339b83f31dfc55","https://git.kernel.org/stable/c/bdfd3593a8248eea6ecfcbf7b47b56b86515672d","https://git.kernel.org/stable/c/2e4b0b95a489259f9d35a3db17023061f8f3d587","https://git.kernel.org/stable/c/83026d83186bc48bb41ee4872f339b83f31dfc55"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:47:51.568503435+00:00"},"epss":{"cve":"CVE-2021-47164","score":0.00232,"percentile":0.14144,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}