Public Date:
496572: CVE-2009-1633 kernel: cifs: fix potential buffer overruns when converting unicode strings sent by server

The MITRE CVE dictionary describes this issue as:

Multiple buffer overflows in the cifs subsystem in the Linux kernel before allow remote CIFS servers to cause a denial of service (memory corruption) and possibly have unspecified other impact via (1) a malformed Unicode string, related to Unicode string area alignment in fs/cifs/sess.c; or (2) long Unicode characters, related to fs/cifs/cifssmb.c and the cifs_readdir function in fs/cifs/readdir.c.

Find out more about CVE-2009-1633 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 7.1
Base Metrics AV:N/AC:M/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete

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 5 (kernel) RHSA-2009:1106 2009-06-16
Red Hat Enterprise Linux 4 (kernel) RHSA-2009:1211 2009-08-13
MRG Grid for RHEL 5 Server (kernel-rt) RHSA-2009:1157 2009-07-14
Last Modified

CVE description copyright © 2017, The MITRE Corporation