CVE-2007-3642

High

The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2.6.20.15, 2.6.21.x before 2.6.21.6, and before 2.6.22 allows remote attackers to cause a denial of service (crash) via an encoded, out-of-range index value for a choice field, which triggers a NULL pointer dereference.

Package Linux Kernel
Published 2007-07-10
Last modified 2026-04-23
CVSS version 2.0
Patch available
Awaiting data

CVSS 2.0 score

7.8

out of 10
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
User Interaction
Scope
Confidentiality
Low
Integrity
None
Availability
Vector string
AV:N/AC:L/Au:N/C:N/I:N/A:C

Weakness type

CWE-189

CVE-2007-3642 is classified as CWE-189

See CWE-189 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2007-3642 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2007-3642?

    CVE-2007-3642 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2007-3642 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2007-3642?

    CVE-2007-3642 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 2.0). The vector string is AV:N/AC:L/Au:N/C:N/I:N/A:C .

  • Is there a patch available for CVE-2007-3642?

    No patch is currently available for CVE-2007-3642. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2007-3642 actively exploited?

    No — CVE-2007-3642 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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