CVE-2023-5717: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A heap out-of-bounds write vulnerability in the Linux kernel's Linux Kernel Performance Events (perf) component can be exploited to achieve local privilege escalation. If perf_read_group() is called while an event's sibling_list is smaller than its child's sibling_list, it can increment or write to memory locations outside of the allocated buffer. We recommend upgrading past commit 32671e3799ca2e4590773fd0e63aaa4229e50c06.

Affected products

• Linux Linux Kernel: from 3.2.95, before 3.3 (fixed in 3.3); from 3.16.50, before 3.17 (fixed in 3.17); from 4.4, before 4.14.328 (fixed in 4.14.328); from 4.15, before 4.19.297 (fixed in 4.19.297); from 4.20, before 5.4.259 (fixed in 5.4.259); from 5.5, before 5.10.199 (fixed in 5.10.199); …

Published 2023-10-25. Last modified 2026-06-17.