CVE-2026-99232
Unknown
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedNov 2, 2026
First seenNov 4, 2026
How to fix
Update
- Linux Linuxe33e2718c62a602001ab549642a1aed0be797105, 041d1a568a11a7ed7415ef1408d0c65041c1ad69, 097fd0050089df17b032f2b852b9b65e548e342a or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | baa031b7bd2ce7502339174a42974321859ecd6a ≤ v < e33e2718c62a602001ab549642a1aed0be797105, baa031b7bd2ce7502339174a42974321859ecd6a ≤ v < 041d1a568a11a7ed7415ef1408d0c65041c1ad69, baa031b7bd2ce7502339174a42974321859ecd6a ≤ v < 097fd0050089df17b032f2b852b9b65e548e342a, 6.19 | e33e2718c62a602001ab549642a1aed0be797105, 041d1a568a11a7ed7415ef1408d0c65041c1ad69, 097fd0050089df17b032f2b852b9b65e548e342a |
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