Linux Kernel Performance Events Vulnerability

CVE-2023-5717

What is CVE-2023-5717?

A vulnerability in the Linux Kernel's Performance Events (perf) component allows for a heap out-of-bounds write. The issue arises when the function perf_read_group() is invoked while an event's sibling_list is smaller than its child's sibling_list, leading to potential write operations outside of the allocated memory buffer. This can be exploited for local privilege escalation, compromising system security. Users are advised to upgrade to a version past commit 32671e3799ca2e4590773fd0e63aaa4229e50c06 to mitigate the risk.

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References