CVE-2025-39943
Critical
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done.
SeverityCritical
CVSS9.4
Exploit probability—
Product
Linux Kernel
PublishedOct 4, 2025
First seenOct 4, 2025
How to fix
Update
- linux linux_kernel5.15.194, 6.1.154, 6.6.108, 6.12.49, 6.16.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.15.1 ≤ v < 5.15.194, 5.16 ≤ v < 6.1.154, 6.2 ≤ v < 6.6.108, 6.7 ≤ v < 6.12.49, 6.13 ≤ v < 6.16.9, 5.15, 6.17 | 5.15.194, 6.1.154, 6.6.108, 6.12.49, 6.16.9 |
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