CVE-2009-3234 Memory corruption in n/a

What is CVE-2009-3234?

CVE-2009-3234 is a medium-severity memory corruption vulnerability in Linux kernel, published on 17 Sep 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Buffer overflow in the perf_copy_attr function in kernel/perf_counter.c in the Linux kernel 2.6.31-rc1 allows local users to cause a denial of service (crash) and execute arbitrary code via a "big size data" to the perf_counter_open system call.

Weakness: CWE-119

Which versions are affected by CVE-2009-3234?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2009-3234?

No fix has been published for CVE-2009-3234 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2009-3234 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-3234 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-w34v-rr2h-4v99.