CVE-2023-4515

CRITICAL9.1

ksmbd: validate command request size

Published Aug 16, 2025

Modified 3 weeks ago

Details

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: validate command request size

In commit 2b9b8f3b68ed ("ksmbd: validate command payload size"), except for SMB2_OPLOCK_BREAK_HE command, the request size of other commands is not checked, it's not expected. Fix it by add check for request size of other commands.

References

WEB

https://git.kernel.org/stable/c/595679098bdcdbfbba91ebe07a2f7f208df93870

WEB

https://git.kernel.org/stable/c/5aa4fda5aa9c2a5a7bac67b4a12b089ab81fee3c

WEB

https://git.kernel.org/stable/c/c6bef3bc30fd4a175aef846b7d928a6c40d091cd

WEB

https://git.kernel.org/stable/c/ff7236b66d69582f90cf5616e63cfc3dc18142bb

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2023-4515

CVSS Analysis

CVSS v3.1

9.1

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

NoneI:N

Availability

HighA:H

9.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Ecosystems

Timeline

PublishedAug 16, 2025

ModifiedAug 5, 2026

CVE-2023-4515 | Mondoo Vulnerability Intelligence