Tracker / CVE-2025-21994
CVE-2025-21994
High 7.6
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix incorrect validation for num_aces field of smb_acl parse_dcal() validate num_aces to allocate posix_ace_state_array. if (num_aces > ULONG_MAX / sizeof(struct smb_ace *)) It is an incorrect validation that we can create an array of size ULONG_MAX. smb_acl has ->size field to calculate actual number of aces in request buffer size. Use this to check invalid num_aces.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 5.15 → 5.15.180 |
| linux | linux_kernel · 5.16 → 6.1.132 |
| linux | linux_kernel · 6.13 → 6.13.9 |
| linux | linux_kernel · 6.2 → 6.6.85 |
| linux | linux_kernel · 6.7 → 6.12.21 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.