CVE-2007-3642 Null dereference in n/a

What is CVE-2007-3642?

CVE-2007-3642 is a high-severity vulnerability in Linux kernel, published on 10 Jul 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-189

Which versions are affected by CVE-2007-3642?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2007-3642?

Upgrade to a fixed version.

Is CVE-2007-3642 being exploited?

There is no known exploitation of CVE-2007-3642 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-jxh4-j45j-4gp9.