CVE-2022-47943
kernel: large length in the zero DataOffset case in smb2_write() processing could result in out-of-bounds read
Severity
CriticalRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 22, 2022
Updated · November 21, 2025
Description
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is an out-of-bounds read and OOPS for SMB2_WRITE, when there is a large length in the zero DataOffset case.
Statement
There was no shipped kernel version that was seen affected by this problem. These files are not built in our source code.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H
CWE-125 · Out-of-bounds Read