{"cve":"CVE-2021-47307","nvd":{"published":"2024-05-21T15:15:18.320","modified":"2026-08-04T10:16:57.277","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: prevent NULL deref in cifs_compose_mount_options()\n\nThe optional @ref parameter might contain an NULL node_name, so\nprevent dereferencing it in cifs_compose_mount_options().\n\nAddresses-Coverity: 1476408 (\"Explicit null dereferenced\")","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/03313d1c3a2f086bb60920607ab79ac8f8578306","https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d","https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796","https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759","https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2021-47307","score":0.0069,"percentile":0.52813,"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."]}