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

ksmbd: fix out-of-bound read in smb2_write

ksmbd_smb2_check_message doesn't validate hdr->NextCommand. If
->NextCommand is bigger than Offset + Length of smb2 write, It will
allow oversized smb2 write length. It will cause OOB read in smb2_write.
Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-6416-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6416-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6416-3 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-6445-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6445-2 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6464-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6466-1 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-6520-1 Linux kernel (StarFive) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 18 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc7:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'}


Mon, 18 Aug 2025 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Sat, 16 Aug 2025 13:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bound read in smb2_write ksmbd_smb2_check_message doesn't validate hdr->NextCommand. If ->NextCommand is bigger than Offset + Length of smb2 write, It will allow oversized smb2 write length. It will cause OOB read in smb2_write.
Title ksmbd: fix out-of-bound read in smb2_write
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-08-19T05:47:12.083Z

Reserved: 2023-07-24T14:52:38.053Z

Link: CVE-2023-3865

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2025-08-16T14:15:27.250

Modified: 2025-11-18T17:57:24.790

Link: CVE-2023-3865

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-08-18T20:49:59Z