Medium severity6.5NVD Advisory· Published Jan 19, 2021· Updated Jun 17, 2026
CVE-2021-3178
CVE-2021-3178
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
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- Linux/Linux kerneldescription
- Range: <=5.10.8
Patches
Vulnerability mechanics
References
4- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdMailing ListPatchVendor Advisory
- lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlnvdMailing ListThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5SGB7TNDVQEOJ7NVTGX56UWHDNQM5TRC/nvd
- patchwork.kernel.org/project/linux-nfs/patch/20210111210129.GA11652%40fieldses.org/nvd
News mentions
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