HIGH
kernel: cifs: fix potential buffer overruns when converting unicode strings sent by server
Published May 28, 2009
7.1
HIGHCVSS 2.0
EPSS 3.03%
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.
Affected products
No data.
Configuration 1
- < 2.6.29.4
Configuration 2
OR
- 4.0
- 5.0
Configuration 3
OR
- 6.06
- 8.04
- 8.10
- 9.04
No data.
MRG for RHEL-5
kernel-rt-0:2.6.24.7-126.el5rt
Fixed · RHSA-2009:1157
Red Hat Enterprise Linux 4
kernel-0:2.6.9-89.0.7.EL
Fixed · RHSA-2009:1211
Red Hat Enterprise Linux 5
kernel-0:2.6.18-128.1.14.el5
Fixed · RHSA-2009:1106
| Product | Package | State | Advisory |
|---|---|---|---|
| MRG for RHEL-5 | kernel-rt-0:2.6.24.7-126.el5rt | Fixed | RHSA-2009:1157 |
| Red Hat Enterprise Linux 4 | kernel-0:2.6.9-89.0.7.EL | Fixed | RHSA-2009:1211 |
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-128.1.14.el5 | Fixed | RHSA-2009:1106 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, and 3.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
7.1 HIGH NVD
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
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.03% 0.03034
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.03034
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.03% (0.03034) | 87.05th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.03% (0.03034) | 85.73th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.84% (0.01839) | 81.35th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.74% (0.03744) | 79.79th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.84% (0.01839) | 81.77th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.19% (0.00186) | 57.25th | v3 (v2023.03.01) |
| Nov 26, 2023 | 0.19% (0.00186) | 55.89th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.21% (0.00207) | 58.48th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.25% (0.00252) | 61.22th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
Weaknesses (2)
References (41)
- http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git%3Ba=commit%3Bh=7b0c8fcff47a885743125dd843db64af41af5a61 x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/sfrench/cifs-2.6.git%3Ba=commit%3Bh=968460ebd8006d55661dec0fb86712b40d71c413 x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=27b87fe52baba0a55e9723030e76fce94fabcea4 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://marc.info/?l=oss-security&m=124099284225229&w=2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://marc.info/?l=oss-security&m=124099371726547&w=2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://secunia.com/advisories/35217 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/35226 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/35298 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/35656 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/35847 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/36051 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/36327 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/37351 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/37471 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://wiki.rpath.com/Advisories:rPSA-2009-0111 x_refsource_CONFIRMBroken Link
- http://www.debian.org/security/2009/dsa-1809 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.debian.org/security/2009/dsa-1844 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.debian.org/security/2009/dsa-1865 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.4 x_refsource_CONFIRMVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:148 vendor-advisoryx_refsource_MANDRIVAThird Party Advisory
- http://www.openwall.com/lists/oss-security/2009/05/14/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2009/05/14/4 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2009/05/15/2 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2009-1157.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.securityfocus.com/archive/1/505254/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/archive/1/507985/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/34612 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/usn-793-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html x_refsource_CONFIRMThird Party Advisory
- http://www.vupen.com/english/advisories/2009/3316 vdb-entryx_refsource_VUPENThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2009-1633 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=496572 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2009-1633
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8588 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9525 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2009-1633
- https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.html vendor-advisoryx_refsource_FEDORAPatchThird Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01271.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 28, 2009
Updated Aug 7, 2024
Reserved May 14, 2009
Link CVE-2009-1633
CISA Vulnrichment
Updated n/a