CVE-2009-1633

Name: CVE-2009-1633
Creator: NVD / NIST
Published: 2009-05-28T20:30:00.233+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.03%

Last modified Jun 16, 2026

CVE-2009-1633 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.03% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

3.03%

85.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 2.6.29.4
Debian	Debian Linux	4.0
Debian	Debian Linux	5.0
Canonical	Ubuntu Linux	6.06
Canonical	Ubuntu Linux	8.04
Canonical	Ubuntu Linux	8.10
Canonical	Ubuntu Linux	9.04

References

http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git%3Ba=commit%3Bh=7b0c8fcff47a885743125dd843db64af41af5a61
http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git%3Ba=commit%3Bh=968460ebd8006d55661dec0fb86712b40d71c413
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=27b87fe52baba0a55e9723030e76fce94fabcea4
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlMailing List, Third Party Advisory
http://marc.info/?l=oss-security&m=124099284225229&w=2Mailing List, Third Party Advisory
http://marc.info/?l=oss-security&m=124099371726547&w=2Mailing List, Third Party Advisory
http://secunia.com/advisories/35217Third Party Advisory
http://secunia.com/advisories/35226Third Party Advisory
http://secunia.com/advisories/35298Third Party Advisory
http://secunia.com/advisories/35656Third Party Advisory
http://secunia.com/advisories/35847Third Party Advisory
http://secunia.com/advisories/36051Third Party Advisory
http://secunia.com/advisories/36327Third Party Advisory
http://secunia.com/advisories/37351Third Party Advisory
http://secunia.com/advisories/37471Third Party Advisory
http://wiki.rpath.com/Advisories:rPSA-2009-0111Broken Link
http://www.debian.org/security/2009/dsa-1809Third Party Advisory
http://www.debian.org/security/2009/dsa-1844Third Party Advisory
http://www.debian.org/security/2009/dsa-1865Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.4Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2009:148Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/05/14/1Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/05/14/4Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/05/15/2Mailing List, Patch, Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2009-1157.htmlThird Party Advisory
http://www.securityfocus.com/archive/1/505254/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/34612Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/usn-793-1Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
http://www.vupen.com/english/advisories/2009/3316Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=496572Issue Tracking, Patch, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8588Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9525Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.htmlPatch, Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01271.htmlThird Party Advisory
http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git%3Ba=commit%3Bh=7b0c8fcff47a885743125dd843db64af41af5a61
http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git%3Ba=commit%3Bh=968460ebd8006d55661dec0fb86712b40d71c413
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=27b87fe52baba0a55e9723030e76fce94fabcea4
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlMailing List, Third Party Advisory
http://marc.info/?l=oss-security&m=124099284225229&w=2Mailing List, Third Party Advisory
http://marc.info/?l=oss-security&m=124099371726547&w=2Mailing List, Third Party Advisory
http://secunia.com/advisories/35217Third Party Advisory
http://secunia.com/advisories/35226Third Party Advisory
http://secunia.com/advisories/35298Third Party Advisory
http://secunia.com/advisories/35656Third Party Advisory
http://secunia.com/advisories/35847Third Party Advisory
http://secunia.com/advisories/36051Third Party Advisory
http://secunia.com/advisories/36327Third Party Advisory
http://secunia.com/advisories/37351Third Party Advisory
http://secunia.com/advisories/37471Third Party Advisory
http://wiki.rpath.com/Advisories:rPSA-2009-0111Broken Link
http://www.debian.org/security/2009/dsa-1809Third Party Advisory
http://www.debian.org/security/2009/dsa-1844Third Party Advisory
http://www.debian.org/security/2009/dsa-1865Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.4Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2009:148Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/05/14/1Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/05/14/4Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/05/15/2Mailing List, Patch, Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2009-1157.htmlThird Party Advisory
http://www.securityfocus.com/archive/1/505254/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/34612Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/usn-793-1Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
http://www.vupen.com/english/advisories/2009/3316Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=496572Issue Tracking, Patch, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8588Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9525Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.htmlPatch, Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01271.htmlThird Party Advisory

Timeline

Published: May 28, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-1633?

How severe is CVE-2009-1633?

Severity scoring for CVE-2009-1633 is pending analysis. The EPSS model estimates a 3.03% probability of exploitation in the next 30 days.

How do I fix CVE-2009-1633?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-1633?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST