CVE-2023-54234

In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization Commit c1af985d27da ("scsi: mpi3mr: Add Event acknowledgment logic") introduced an array mrioc->evtack_cmds but initialization of the array elements was missed. They are just zero cleared. The function mpi3mr_complete_evt_ack() refers host_tag field of the elements. Due to the zero value of the host_tag field, the function calls clear_bit() for mrico->evtack_cmds_bitmap with wrong bit index. This results in memory access to invalid address and "BUG: KASAN: use-after-free". This BUG was observed at eHBA-9600 firmware update to version 8.3.1.0. To fix it, add the missing initialization of mrioc->evtack_cmds.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/4e0dfdb48a824deac3dfbc67fb856ef2aee13529
https://git.kernel.org/stable/c/67989091e11a974003ddf2ec39bc613df8eadd83
https://git.kernel.org/stable/c/e39ea831ebad4ab15c4748cb62a397a8abcca36e

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-30 13:16

Updated : 2026-08-04 11:16

NVD link : CVE-2023-54234

Mitre link : CVE-2023-54234

CVE.ORG link : CVE-2023-54234

JSON object : View

Products Affected

No product.

CWE

No CWE.

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