{"cve":"CVE-2023-53055","nvd":{"published":"2025-05-02T16:15:24.590","modified":"2026-06-17T06:44:12.603","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfscrypt: destroy keyring after security_sb_delete()\n\nfscrypt_destroy_keyring() must be called after all potentially-encrypted\ninodes were evicted; otherwise it cannot safely destroy the keyring.\nSince inodes that are in-use by the Landlock LSM don't get evicted until\nsecurity_sb_delete(), this means that fscrypt_destroy_keyring() must be\ncalled *after* security_sb_delete().\n\nThis fixes a WARN_ON followed by a NULL dereference, only possible if\nLandlock was being used on encrypted files.","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/497ab5d9c7852dfedab2c9de75e41b60e54b7c5d","https://git.kernel.org/stable/c/992a3f3e8a0c92151dfdf65fc85567c865fd558a","https://git.kernel.org/stable/c/ccb820dc7d2236b1af0d54ae038a27b5b6d5ae5a","https://git.kernel.org/stable/c/d77531fac6a1fd9f1db0195438ba5419d72b96c4"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:01:22.920403922+00:00"},"epss":{"cve":"CVE-2023-53055","score":0.00202,"percentile":0.10102,"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."]}