{"cve":"CVE-2009-4020","nvd":{"published":"2009-12-04T21:30:00.547","modified":"2026-06-16T23:12:50.733","status":"Modified","description":"Stack-based buffer overflow in the hfs subsystem in the Linux kernel 2.6.32 allows remote attackers to have an unspecified impact via a crafted Hierarchical File System (HFS) filesystem, related to the hfs_readdir function in fs/hfs/dir.c.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html","http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00007.html","http://marc.info/?l=linux-mm-commits&m=125987755823047&w=2","http://secunia.com/advisories/38276","http://secunia.com/advisories/39742"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T19:54:26.868835795+00:00"},"epss":{"cve":"CVE-2009-4020","score":0.04759,"percentile":0.91894,"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."]}