In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix signededness bug in smb_direct_prepare_negotiation()
smb_direct_prepare_negotiation() casts an unsigned __u32 value
from sp->max_recv_size and req->preferred_send_size to a signed
int before computing min_t(int, ...). A maliciously provided
preferred_send_size of 0x80000000 will return as smaller than
max_recv_size, and then be used to set the maximum allowed
alowed receive size for the next message.
By sending a second message with a large value (>1420 bytes)
the attacker can then achieve a heap buffer overflow.
This fix replaces min_t(int, ...) with min_t(u32)
References
Configurations
Configuration 1 (hide)
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History
11 May 2026, 20:52
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/55abc475d096da4a5356b6efb0cfdc6156bc1550 - Patch | |
| References | () https://git.kernel.org/stable/c/6b4f875aac344cdd52a1f34cc70ed2f874a65757 - Patch | |
| References | () https://git.kernel.org/stable/c/ceae058eb707ddd0d68f0872f9d9f23b7c30c37b - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
|
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-674 |
08 May 2026, 13:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.8 |
06 May 2026, 12:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-06 12:16
Updated : 2026-05-11 20:52
NVD link : CVE-2026-43185
Mitre link : CVE-2026-43185
CVE.ORG link : CVE-2026-43185
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-674
Uncontrolled Recursion