{"cve":"CVE-2023-52996","nvd":{"published":"2025-03-27T17:15:48.310","modified":"2026-06-17T06:44:04.960","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: prevent potential spectre v1 gadget in fib_metrics_match()\n\nif (!type)\n        continue;\n    if (type > RTAX_MAX)\n        return false;\n    ...\n    fi_val = fi->fib_metrics->metrics[type - 1];\n\n@type being used as an array index, we need to prevent\ncpu speculation or risk leaking kernel memory content.","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":[],"references":["https://git.kernel.org/stable/c/5e9398a26a92fc402d82ce1f97cc67d832527da0","https://git.kernel.org/stable/c/7f9828fb1f688210e681268490576f0ca65c322a","https://git.kernel.org/stable/c/8f0eb24f1a7a60ce635f0d757a46f1a37a4d467d","https://git.kernel.org/stable/c/ca3cf947760de050d558293002ad3e7f4b8745d2","https://git.kernel.org/stable/c/f9753ebd61be2d957b5504cbd3fd719674f05b7a"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:00:28.034033815+00:00"},"epss":{"cve":"CVE-2023-52996","score":0.00268,"percentile":0.1904,"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."]}