CVE-1999-1166 Privilege escalation in n/a

What is CVE-1999-1166?

CVE-1999-1166 is a high-severity vulnerability in Linux kernel, published on 12 Sep 2001. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Linux 2.0.37 does not properly encode the Custom segment limit, which allows local users to gain root privileges by accessing and modifying kernel memory.

Which versions are affected by CVE-1999-1166?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-1999-1166?

No fix has been published for CVE-1999-1166 yet. Limit exposure of the affected software until one is available.

Is CVE-1999-1166 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-1999-1166 exists.

Public exploit code: 1 Exploit-DB entry.

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-8cc4-2w6x-64qg.