critical · CVSS v3 9.8

CVE-2026-99232

In the Linux kernel, the following vulnerability has been resolved: tracing/syscalls: Use copy_from_user for the faultab…

Description

In the Linux kernel, the following vulnerability has been resolved: tracing/syscalls: Use copy_from_user for the faultable syscall buffer syscall_copy_user_array() copies the buffer argument of faultable syscalls (write, pwrite64, ...) with __copy_from_user(), which skips access_ok(). Use copy_from_user() instead so a non-user address is rejected and the entry is recorded as faulted. It could be a security concern for machines that trust perf a bit too much.

Scores

Severity
critical
CVSS v2
7.5
CVSS v3
9.8
CVSS v4
—
EPSS
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