High 7.8Published Dec 30, 2025

CVE-2023-54234scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization

Updated under an hour ago (2026-10-19 08:30 UTC)

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c1af985d27da2d530c22604644e9025810f57d7c before 4e0dfdb48a824deac3dfbc67fb856ef2aee13529; from c1af985d27da2d530c22604644e9025810f57d7c before 67989091e11a974003ddf2ec39bc613df8eadd83; from c1af985d27da2d530c22604644e9025810f57d7c before e39ea831ebad4ab15c4748cb62a397a8abcca36e	CNA record

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.