VULNERABILITY INTELLIGENCE

CVE-2021-3178

CVSS score6.5 MEDIUM
EPSS probability2.45%
CISA KEVNot currently listed
Published2021-01-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Description

fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8, when there is an NFS export of a subdirectory of a filesystem, allows remote attackers to traverse to other parts of the filesystem via READDIRPLUS. NOTE: some parties argue that such a subdirectory export is not intended to prevent this attack; see also the exports(5) no_subtree_check default behavior

Weakness classification

  • nvd@nist.gov: CWE-22

Primary references