CVE-2026-99232 - tracing/syscalls: Use copy_from_user for the faultable syscall buffer

CVE-2026-99232 - tracing/syscalls: Use copy_from_user for the faultable syscall buffer

https://cvefeed.io/rssfeed/latest.atom / Mon, 11/02/2026 - 19:28
CVE ID :CVE-2026-99232
Published : Nov. 2, 2026, 4:17 p.m. | 1 hour, 7 minutes ago
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.
Severity: 0.0 | NA
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