What is CVE-2009-1633?

CVE-2009-1633 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2009-1633 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-1633?

CVE-2009-1633 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is AV:N/AC:M/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2009-1633?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-1633 patch availability.

Is CVE-2009-1633 actively exploited?

CVE-2009-1633 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2009-1633

High

Multiple buffer overflows in the cifs subsystem in the Linux kernel before 2.6.29.4 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.

Package Linux Kernel

Published 2009-05-28

Last modified 2026-04-23

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.1

out of 10

High

Attack Vector

Network

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

None

Integrity

None

Availability

Vector string

AV:N/AC:M/Au:N/C:N/I:N/A:C

Weakness type

CWE-119

CVE-2009-1633 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

38 total

Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.4

Vendor Advisory
Openwall
http://www.openwall.com/lists/oss-security/2009/05/14/1

Mailing List Patch Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2009/05/14/4

Mailing List Patch Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2009/05/15/2

Mailing List Patch Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=496572

Issue Tracking Patch Third Party Advisory

Showing 5 of 38 references View all on NVD

Details

CVE ID CVE-2009-1633

Severity High

CVSS score 7.1 / 10

CVSS version 2.0

Published 2009-05-28

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-1633?

CVE-2009-1633 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2009-1633 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-1633?

CVE-2009-1633 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 2.0). The vector string is AV:N/AC:M/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2009-1633?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-1633 patch availability.
Is CVE-2009-1633 actively exploited?

No. CVE-2009-1633 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.