{"cve":"CVE-2021-47207","nvd":{"published":"2024-04-10T19:15:48.400","modified":"2026-06-17T04:16:54.667","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: gus: fix null pointer dereference on pointer block\n\nThe pointer block return from snd_gf1_dma_next_block could be\nnull, so there is a potential null pointer dereference issue.\nFix this by adding a null check before dereference.","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/16721797dcef2c7c030ffe73a07f39a65f9323c3","https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f","https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be","https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c","https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:48:32.179249784+00:00"},"epss":{"cve":"CVE-2021-47207","score":0.00226,"percentile":0.13361,"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."]}