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Vulnerability · Published Dec 30, 2025 · Assigned by Linux

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

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.1%top 95.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.20-1DEBIAN-CVE-2023-54234
Debian:13linux6.1.20-1DEBIAN-CVE-2023-54234
Debian:14linux6.1.20-1DEBIAN-CVE-2023-54234
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-54234
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-54234
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2023-54234

Affected products (as reported)

VendorProductVersions
Linux Linux c1af985d27da2d530c22604644e9025810f57d7c – before 4e0dfdb48a824deac3dfbc67fb856ef2aee13529c1af985d27da2d530c22604644e9025810f57d7c – before 67989091e11a974003ddf2ec39bc613df8eadd83c1af985d27da2d530c22604644e9025810f57d7c – before e39ea831ebad4ab15c4748cb62a397a8abcca36e
Linux Linux 5.17

References