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CVE-2025-21723

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Fix possible crash when setting up bsg fails If bsg_setup_queue() fails, the bsg_queue is assigned a non-NULL value.

Published Feb 27, 2025CWE-476EPSS 0.22%

Overview

CVE-2025-21723 is a medium-severity vulnerability. It was published on February 27, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

scsi: mpi3mr: Fix possible crash when setting up bsg fails

If bsg_setup_queue() fails, the bsg_queue is assigned a non-NULL value.

Consequently, in mpi3mr_bsg_exit(), the condition "if(!mrioc->bsg_queue)"

will not be satisfied, preventing execution from entering

bsg_remove_queue(), which could lead to the following crash:

BUG: kernel NULL pointer dereference, address: 000000000000041c

Call Trace:

<TASK>

mpi3mr_bsg_exit+0x1f/0x50 [mpi3mr]

mpi3mr_remove+0x6f/0x340 [mpi3mr]

pci_device_remove+0x3f/0xb0

device_release_driver_internal+0x19d/0x220

unbind_store+0xa4/0xb0

kernfs_fop_write_iter+0x11f/0x200

vfs_write+0x1fc/0x3e0

ksys_write+0x67/0xe0

do_syscall_64+0x38/0x80

entry_SYSCALL_64_after_hwframe+0x78/0xe2

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/19b248069d1b1424982723a2bf3941ad864d5204Refgit.kernel.org/stable/c/295006f6e8c17212d3098811166e29627d19e05cRefgit.kernel.org/stable/c/832b8f95a2832321b8200ae478ed988b25faaef4

How CyberStrike helps

Frequently asked questions

What is CVE-2025-21723?

CVE-2025-21723 is a medium-severity vulnerability. It was published on February 27, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-21723?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-21723?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-21723?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-21723 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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