CVE-2006-6056 Null dereference in n/a

What is CVE-2006-6056?

CVE-2006-6056 is a medium-severity vulnerability in Linux kernel, published on 22 Nov 2006. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Linux kernel 2.6.x up to 2.6.18 and possibly other versions, when SELinux hooks are enabled, allows local users to cause a denial of service (crash) via a malformed file stream that triggers a NULL pointer dereference in the superblock_doinit function, as demonstrated using an HFS filesystem image.

Which versions are affected by CVE-2006-6056?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2006-6056?

Apply the vendor's patch.

Is CVE-2006-6056 being exploited?

There is no known exploitation of CVE-2006-6056 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-qgv2-2pw8-fjr2.