CVE-2006-1856 Security feature bypass in n/a

What is CVE-2006-1856?

CVE-2006-1856 is a high-severity vulnerability in Linux kernel, published on 19 May 2006. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Certain modifications to the Linux kernel 2.6.16 and earlier do not add the appropriate Linux Security Modules (LSM) file_permission hooks to the (1) readv and (2) writev functions, which might allow attackers to bypass intended access restrictions.

Which versions are affected by CVE-2006-1856?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2006-1856?

Apply the vendor's patch.

Is CVE-2006-1856 being exploited?

There is no known exploitation of CVE-2006-1856 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-7whw-v9g4-89gc.