CVE-2024-36920
scsi: mpi3mr: Avoid memcpy field-spanning write WARNING
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Avoid memcpy field-spanning write WARNING When the "storcli2 show" command is executed for eHBA-9600, mpi3mr driver prints this WARNING message: memcpy: detected field-spanning write (size 128) of single field "bsg_reply_buf->reply_buf" at drivers/scsi/mpi3mr/mpi3mr_app.c:1658 (size 1) WARNING: CPU: 0 PID: 12760 at drivers/scsi/mpi3mr/mpi3mr_app.c:1658 mpi3mr_bsg_request+0x6b12/0x7f10 [mpi3mr] The cause of the WARN is 128 bytes memcpy to the 1 byte size array "__u8 replay_buf[1]" in the struct mpi3mr_bsg_in_reply_buf. The array is intended to be a flexible length array, so the WARN is a false positive. To suppress the WARN, remove the constant number '1' from the array declaration and clarify that it has flexible length. Also, adjust the memory allocation size to match the change.
INFO
Published Date :
May 30, 2024, 4:15 p.m.
Last Modified :
Oct. 1, 2025, 1:53 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected kernel package.
- Update the affected packages.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-36920.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-36920 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-36920
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-36920 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-36920 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 01, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.8.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.31 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.14 up to (excluding) 6.1.91 Added Reference Type CVE: https://git.kernel.org/stable/c/429846b4b6ce9853e0d803a2357bb2e55083adf0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/429846b4b6ce9853e0d803a2357bb2e55083adf0 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/4d2772324f43cf5674ac3dbe3f74a7e656396716 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4d2772324f43cf5674ac3dbe3f74a7e656396716 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/5f0266044dc611563539705bff0b3e1545fbb6aa Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5f0266044dc611563539705bff0b3e1545fbb6aa Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/f09318244c6cafd10aca741b9c01e0a2c362d43a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f09318244c6cafd10aca741b9c01e0a2c362d43a Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/429846b4b6ce9853e0d803a2357bb2e55083adf0 Added Reference https://git.kernel.org/stable/c/4d2772324f43cf5674ac3dbe3f74a7e656396716 Added Reference https://git.kernel.org/stable/c/5f0266044dc611563539705bff0b3e1545fbb6aa Added Reference https://git.kernel.org/stable/c/f09318244c6cafd10aca741b9c01e0a2c362d43a -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 30, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Avoid memcpy field-spanning write WARNING When the "storcli2 show" command is executed for eHBA-9600, mpi3mr driver prints this WARNING message: memcpy: detected field-spanning write (size 128) of single field "bsg_reply_buf->reply_buf" at drivers/scsi/mpi3mr/mpi3mr_app.c:1658 (size 1) WARNING: CPU: 0 PID: 12760 at drivers/scsi/mpi3mr/mpi3mr_app.c:1658 mpi3mr_bsg_request+0x6b12/0x7f10 [mpi3mr] The cause of the WARN is 128 bytes memcpy to the 1 byte size array "__u8 replay_buf[1]" in the struct mpi3mr_bsg_in_reply_buf. The array is intended to be a flexible length array, so the WARN is a false positive. To suppress the WARN, remove the constant number '1' from the array declaration and clarify that it has flexible length. Also, adjust the memory allocation size to match the change. Added Reference kernel.org https://git.kernel.org/stable/c/5f0266044dc611563539705bff0b3e1545fbb6aa [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f09318244c6cafd10aca741b9c01e0a2c362d43a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4d2772324f43cf5674ac3dbe3f74a7e656396716 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/429846b4b6ce9853e0d803a2357bb2e55083adf0 [No types assigned]