CVE-2009-2691 Race condition in n/a

What is CVE-2009-2691?

CVE-2009-2691 is a low-severity vulnerability in Linux kernel, published on 14 Aug 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The mm_for_maps function in fs/proc/base.c in the Linux kernel 2.6.30.4 and earlier allows local users to read (1) maps and (2) smaps files under proc/ via vectors related to ELF loading, a setuid process, and a race condition.

Weakness: CWE-200

Which versions are affected by CVE-2009-2691?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2009-2691?

Apply the vendor's patch.

Is CVE-2009-2691 being exploited?

There is no known exploitation of CVE-2009-2691 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-274m-66j7-crv4.