{"cve":"CVE-2021-47086","nvd":{"published":"2024-03-04T18:15:07.393","modified":"2026-06-17T04:16:25.900","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nphonet/pep: refuse to enable an unbound pipe\n\nThis ioctl() implicitly assumed that the socket was already bound to\na valid local socket name, i.e. Phonet object. If the socket was not\nbound, two separate problems would occur:\n\n1) We'd send an pipe enablement request with an invalid source object.\n2) Later socket calls could BUG on the socket unexpectedly being\n   connected yet not bound to a valid object.","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/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59","https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161","https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b","https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52","https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafa"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:46:54.846886191+00:00"},"epss":{"cve":"CVE-2021-47086","score":0.00226,"percentile":0.13358,"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."]}