CVE-2006-4997 Use after free in n/a

What is CVE-2006-4997?

CVE-2006-4997 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 9 Oct 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The clip_mkip function in net/atm/clip.c of the ATM subsystem in Linux kernel allows remote attackers to cause a denial of service (panic) via unknown vectors that cause the ATM subsystem to access the memory of socket buffers after they are freed (freed pointer dereference).

Weakness: CWE-416

Which versions are affected by CVE-2006-4997?

It affects 3 products.

Products include Canonical Ubuntu Linux, Linux kernel, Redhat Enterprise Linux.

How do I fix CVE-2006-4997?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2006-4997 being exploited?

There is no known exploitation of CVE-2006-4997 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

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

Also known as GHSA-684x-5684-48r7.