CVE-2007-3642

The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2...

7.8 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.

Exploit likelihood

3.87%Up 0.1 points since Feb 4, 2022

What each source reports

NVD Score used 7.8

Record: CVE-2007-3642
CVSS 2.0: 7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness: CWE-189
Updated: 2026-11-02

CVE List No score

Record: CVE-2007-3642
Updated: 2026-11-02

EUVDEUVD-2007-3626 No score

Record: EUVD-2007-3626
Updated: 2026-11-03

GitHub AdvisoriesGHSA-jxh4-j45j-4gp9 No score

The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2...

Record: GHSA-jxh4-j45j-4gp9
Updated: 2026-11-02

OSVBELL-CVE-2007-3642 7.8

CVE-2007-3642 does not affect BellSoft software

Record: BELL-CVE-2007-3642
CVSS 2.0: 7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Updated: 2026-11-02

Affected products

linux kernel

Affected packages

Affected packages
Package	Affected	Fixed
`linux-2.6` Debian:4.0 From an advisory covering 11 CVEs	before 2.6.18.dfsg.1-13etch1, plus listed versions 2.6.18.dfsg.1-122.6.18.dfsg.1-12etch12.6.18.dfsg.1-12etch22.6.18.dfsg.1-13	2.6.18.dfsg.1-13etch1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	affected, aliases, facts, references, title	GitHub Advisories, OSV
Nov 2, 2026	first indexed	CVE List, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2007-3642 is a high vulnerability (CVSS 7.8) in Linux Kernel, published July 10, 2007. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.87%, the 90th percentile. No source names a fixed version.

References

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