CVE-2026-99232 — Vulnerability intelligence
—
Published:
- CVSS
- Not available
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
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.