Public Date:
500297: CVE-2009-1630 kernel: nfs: fix NFS v4 client handling of MAY_EXEC in nfs_permission

The MITRE CVE dictionary describes this issue as:

The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel and earlier, when atomic_open is available, does not check execute (aka EXEC or MAY_EXEC) permission bits, which allows local users to bypass permissions and execute files, as demonstrated by files on an NFSv4 fileserver.

Find out more about CVE-2009-1630 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, and 3.

It was addressed in Red Hat Enterprise Linux 4, 5, and Red Hat Enterprise MRG via , , and .

CVSS v2 metrics

Base Score 2.1
Base Metrics AV:L/AC:L/Au:N/C:N/I:P/A:N
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 4 (kernel) RHSA-2009:1132 2009-06-30
Red Hat Enterprise Linux 5 (kernel) RHSA-2009:1106 2009-06-16
MRG Grid for RHEL 5 Server (kernel-rt) RHSA-2009:1157 2009-07-14
Last Modified

CVE description copyright © 2017, The MITRE Corporation