PT-2025-40639 · Linux+4 · Linux Kernel+4
CVE-2025-39943
·
Published
2025-09-14
·
Updated
2026-08-30
CVSS v3.1
9.4
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel’s ksmbd component contains a flaw related to the handling of
smb direct data transfer structures. Specifically, the data offset and data length fields are not properly validated, potentially leading to out-of-bounds access. This issue is present in the recv done function.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Out of bounds Read
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Red Os
Ubuntu