{"cve":"CVE-2023-53473","nvd":{"published":"2025-10-01T12:15:49.557","modified":"2026-10-15T22:17:39.960","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: improve error handling from ext4_dirhash()\n\nThe ext4_dirhash() will *almost* never fail, especially when the hash\ntree feature was first introduced.  However, with the addition of\nsupport of encrypted, casefolded file names, that function can most\ncertainly fail today.\n\nSo make sure the callers of ext4_dirhash() properly check for\nfailures, and reflect the errors back up to their callers.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786","https://git.kernel.org/stable/c/70d579aefa652a06af97e013e3fbbabbe5a43553","https://git.kernel.org/stable/c/b2531936118deb3f479c4fa1bcd787b74b8faa6a","https://git.kernel.org/stable/c/c1fae027da61fe8e7eb99f7244297e81bc0f1e43","https://git.kernel.org/stable/c/f68876aeef96ef8b708ab10b9cb47ce0a5adb424"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:11:26.888974865+00:00"},"epss":{"cve":"CVE-2023-53473","score":0.00168,"percentile":0.05954,"date":"2026-10-25"},"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."]}