CVE-2009-1633: n/a vulnerability

CVE-2009-1633: Multiple buffer overflows in the cifs subsystem in the Linux kernel before 2.6.29.4 allow remote CIFS serve...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 05:20 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Linux kernel CIFS client vulnerability. A malicious or malformed CIFS/SMB server response could corrupt memory and crash affected systems, with unspecified other impact possible. The main business concern is legacy Linux assets that still mount CIFS shares, especially from untrusted or external servers. Exposure is most plausible on legacy Linux systems, appliances, or vendor kernels that include the vulnerable CIFS client code and connect to CIFS/SMB servers. Vendor backports may change apparent kernel-version exposure, so distribution advisories should be checked before relying on raw upstream version numbers. Treat this as a legacy exposure issue. It is not flagged as actively exploited in the provided sources, but affected systems are very old and should be upgraded or isolated if they still perform CIFS/SMB mounting. Mitigation focus: Upgrade Linux kernels or vendor kernel packages using the relevant distribution advisory.; Prioritize legacy systems that mount CIFS/SMB shares from untrusted or third-party servers.; Where upgrades are delayed, restrict CIFS client connections to trusted servers..

Prepared: Jun 28, 2026, 10:45 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 28, 2009, 20:14 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
FEDORA-2009-5356CVE reference · vendor-advisory, x_refsource_FEDORA
oval:org.mitre.oval:def:8588CVE reference · vdb-entry, signature
oval:org.mitre.oval:def:9525CVE reference · vdb-entry, signature
FEDORA-2009-5383CVE reference · vendor-advisory, x_refsource_FEDORA
https://bugzilla.redhat.com/show_bug.cgi?id=496572CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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