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CVE Record

CVE-2016-1237: nfsd in the Linux kernel through 4.6.3 allows local users to bypass intended file-permission restrictions b...

nfsd in the Linux kernel through 4.6.3 allows local users to bypass intended file-permission restrictions by setting a POSIX ACL, related to nfs2acl.c, nfs3acl.c, and nfs4acl.c.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2016-1237 is a Linux kernel NFS server flaw where a local or NFS-authorized user could set file ACLs in a way that bypasses intended permissions. The main business risk is unauthorized access to files on affected NFS exports, especially shared engineering, backup, or operational file stores. Exposure is most likely on Linux systems acting as NFS servers, particularly kernels through 4.6.3 or distribution kernels before vendor backports. Risk depends on whether untrusted or semi-trusted users can access NFS exports and whether exported data is sensitive. Prioritize patching NFS servers that host sensitive shared data or allow broad user access. This is not described as actively exploited in the provided sources, but permission bypass on file shares can create real confidentiality and integrity exposure. Mitigation focus: Apply vendor kernel updates from Ubuntu, Debian, or your Linux distribution.; Use kernels containing the upstream Linux nfsd ACL fix commit.; Restrict NFS export access to trusted users and networks until patched..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

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Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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