CVE-2023-54234 (GCVE-0-2023-54234)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:11 – Updated: 2026-10-15 21:41
VLAI
Title
scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 21:39 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6637 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c1af985d27da2d530c22604644e9025810f57d7c , < 4e0dfdb48a824deac3dfbc67fb856ef2aee13529 (git)
Affected: c1af985d27da2d530c22604644e9025810f57d7c , < 67989091e11a974003ddf2ec39bc613df8eadd83 (git)
Affected: c1af985d27da2d530c22604644e9025810f57d7c , < e39ea831ebad4ab15c4748cb62a397a8abcca36e (git)
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Linux Linux Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 6.1.16 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: mpi3mr: Fix missing mrioc-\u003eevtack_cmds initialization\n\nCommit c1af985d27da (\"scsi: mpi3mr: Add Event acknowledgment logic\")\nintroduced an array mrioc-\u003eevtack_cmds but initialization of the array\nelements was missed. They are just zero cleared. The function\nmpi3mr_complete_evt_ack() refers host_tag field of the elements. Due to the\nzero value of the host_tag field, the function calls clear_bit() for\nmrico-\u003eevtack_cmds_bitmap with wrong bit index. This results in memory\naccess to invalid address and \"BUG: KASAN: use-after-free\". This BUG was\nobserved at eHBA-9600 firmware update to version 8.3.1.0. To fix it, add\nthe missing initialization of mrioc-\u003eevtack_cmds."
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            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: mpi3mr: Correcci\u00f3n de la inicializaci\u00f3n faltante de mrioc  -\u003e  evtack_cmds\n\nEl commit c1af985d27da (\u2019scsi: mpi3mr: A\u00f1adir l\u00f3gica de reconocimiento de eventos\u2019) introdujo un array mrioc  -\u003e  evtack_cmds, pero se omiti\u00f3 la inicializaci\u00f3n de los elementos del array. Simplemente se borran a cero. La funci\u00f3n mpi3mr_complete_evt_ack() hace referencia al campo host_tag de los elementos. Debido al valor cero del campo host_tag, la funci\u00f3n llama a clear_bit() para mrico  -\u003e  evtack_cmds_bitmap con un \u00edndice de bit incorrecto. Esto resulta en un acceso a memoria a una direcci\u00f3n inv\u00e1lida y \u2019BUG: KASAN: uso despu\u00e9s de liberaci\u00f3n\u2019. Este BUG se observ\u00f3 durante la actualizaci\u00f3n del firmware de eHBA-9600 a la versi\u00f3n 8.3.1.0. Para solucionarlo, se a\u00f1ade la inicializaci\u00f3n faltante de mrioc  -\u003e  evtack_cmds."
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        "lastModified": "2026-10-28T19:10:00.193",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: scsi: mpi3mr: Fix missing mrioc-\u003eevtack_cmds initialization",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54234.json",
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}



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