CVE-2009-3234: Linux Kernel

Medium severity, CVSS 4.9. EPSS: 1.8% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: version 2.6.31 only

Published 2009-09-17. Last modified 2026-06-16.