{"cve":"CVE-2021-47332","nvd":{"published":"2024-05-21T15:15:20.133","modified":"2026-06-17T04:17:13.033","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usx2y: Don't call free_pages_exact() with NULL address\n\nUnlike some other functions, we can't pass NULL pointer to\nfree_pages_exact().  Add a proper NULL check for avoiding possible\nOops.","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/7d7f30cf182e55023fa8fde4c084b2d37c6be69d","https://git.kernel.org/stable/c/82e5ee742fdd8874fe996181b87fafe1eb5f1196","https://git.kernel.org/stable/c/88262229b778f4f7a896da828d966f94dcb35d19","https://git.kernel.org/stable/c/bee295f5e03510252d18b25cc1d26230256eb87a","https://git.kernel.org/stable/c/cae0cf651adccee2c3f376e78f30fbd788d0829f"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2021-47332","score":0.00239,"percentile":0.15008,"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."]}