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.

N/A

CVSS

Severity:

EPSS 0.13%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/5f0266044dc611563539705bff0b3e1545fbb6aa
https://git.kernel.org/stable/c/f09318244c6cafd10aca741b9c01e0a2c362d43a
https://git.kernel.org/stable/c/4d2772324f43cf5674ac3dbe3f74a7e656396716
https://git.kernel.org/stable/c/429846b4b6ce9853e0d803a2357bb2e55083adf0

Frequently Asked Questions

What is the severity of CVE-2024-36920?: CVE-2024-36920 has not yet been assigned a CVSS score.
How to fix CVE-2024-36920?: To fix CVE-2024-36920, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-36920 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-36920 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-36920?: CVE-2024-36920 affects Linux Linux, Linux Linux.

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