CVE-2006-5755 Denial of service in n/a

What is CVE-2006-5755?

CVE-2006-5755 is a medium-severity denial of service vulnerability in Linux kernel, published on 9 Jan 2007. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Linux kernel before 2.6.18, when running on x86_64 systems, does not properly save or restore EFLAGS during a context switch, which allows local users to cause a denial of service (crash) by causing SYSENTER to set an NT flag, which can trigger a crash on the IRET of the next task.

Which versions are affected by CVE-2006-5755?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2006-5755?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2006-5755 being exploited?

There is no known exploitation of CVE-2006-5755 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-8cq2-mm8h-vjrv.