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.
Affected versions
Linux kernel versions
5.17
and later are affected. Fixed in
6.1.16,
6.2.3,
6.3
and their respective stable series.
References
The following references provide additional information about CVE-2023-54234 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/4e0dfdb48a824deac3dfbc67fb856ef2aee13529
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PatchKernel patch commithttps://git.kernel.org/stable/c/67989091e11a974003ddf2ec39bc613df8eadd83
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PatchKernel patch commithttps://git.kernel.org/stable/c/e39ea831ebad4ab15c4748cb62a397a8abcca36e
Frequently asked questions
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What is CVE-2023-54234?
CVE-2023-54234 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.17 onward and has been patched in 6.1.16, 6.2.3 and 6.3. CVE-2023-54234 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-54234?
Yes — CVE-2023-54234 has been patched. Fixed versions include 6.1.16, 6.2.3 and 6.3. If you are running Linux kernel 5.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-54234 actively exploited?
No — CVE-2023-54234 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.