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?

No patch is currently available for CVE-2009-1633. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

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

The following references provide additional information about CVE-2009-1633 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html

Mailing List Third Party Advisory
Marc
http://marc.info/?l=oss-security&m=124099284225229&w=2

Mailing List Third Party Advisory
Marc
http://marc.info/?l=oss-security&m=124099371726547&w=2

Mailing List Third Party Advisory
Secunia
http://secunia.com/advisories/35217

Third Party Advisory
Secunia
http://secunia.com/advisories/35226

Third Party Advisory
Secunia
http://secunia.com/advisories/35298

Third Party Advisory
Secunia
http://secunia.com/advisories/35656

Third Party Advisory
Secunia
http://secunia.com/advisories/35847

Third Party Advisory
Secunia
http://secunia.com/advisories/36051

Third Party Advisory
Secunia
http://secunia.com/advisories/36327

Third Party Advisory
Secunia
http://secunia.com/advisories/37351

Third Party Advisory
Secunia
http://secunia.com/advisories/37471

Third Party Advisory
Wiki
http://wiki.rpath.com/Advisories:rPSA-2009-0111

Broken Link
Debian Security
http://www.debian.org/security/2009/dsa-1809

Third Party Advisory
Debian Security
http://www.debian.org/security/2009/dsa-1844

Third Party Advisory
Debian Security
http://www.debian.org/security/2009/dsa-1865

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

Vendor Advisory
Mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2009:148

Third Party Advisory
Red Hat
http://www.redhat.com/support/errata/RHSA-2009-1157.html

Third Party Advisory
Securityfocus
http://www.securityfocus.com/archive/1/505254/100/0/threaded

Third Party Advisory VDB Entry
Securityfocus
http://www.securityfocus.com/archive/1/507985/100/0/threaded

Third Party Advisory VDB Entry
Securityfocus
http://www.securityfocus.com/bid/34612

Third Party Advisory VDB Entry
Ubuntu Security
http://www.ubuntu.com/usn/usn-793-1

Third Party Advisory
Vmware
http://www.vmware.com/security/advisories/VMSA-2009-0016.html

Third Party Advisory
Vupen
http://www.vupen.com/english/advisories/2009/3316

Third Party Advisory
Oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8588

Third Party Advisory
Oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9525

Third Party Advisory
Red Hat
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01271.html

Third Party Advisory
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git%3Ba=commit%3Bh=7b0c8fcff47a885743125dd843db64af41af5a61
Patch
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git%3Ba=commit%3Bh=968460ebd8006d55661dec0fb86712b40d71c413
Patch
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=27b87fe52baba0a55e9723030e76fce94fabcea4
Patch

8 patch commits total 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?

No patch is currently available for CVE-2009-1633. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →