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.

The following products are affected by CVE-2023-54234 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2023-54234.

URL	Resource
https://git.kernel.org/stable/c/4e0dfdb48a824deac3dfbc67fb856ef2aee13529
https://git.kernel.org/stable/c/67989091e11a974003ddf2ec39bc613df8eadd83
https://git.kernel.org/stable/c/e39ea831ebad4ab15c4748cb62a397a8abcca36e
https://lore.kernel.org/linux-cve-announce/2025123031-CVE-2023-54234-bb5c@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-54234
https://www.cve.org/CVERecord?id=CVE-2023-54234