Linux Kernel up to 6.3.2 qedi_remove use after free

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.10.179/5.15.111/6.1.28/6.2.15/6.3.2. It has been rated as critical. Impacted is the function qedi_remove. Performing a manipulation results in use after free. This vulnerability is cataloged as CVE-2023-54100. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.10.179/5.15.111/6.1.28/6.2.15/6.3.2. This affects the function qedi_remove. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: scsi: qedi: Fix use after free bug in qedi_remove() In qedi_probe() we call __qedi_probe() which initializes &qedi->recovery_work with qedi_recovery_handler() and &qedi->board_disable_work with qedi_board_disable_work(). When qedi_schedule_recovery_handler() is called, schedule_delayed_work() will finally start the work. In qedi_remove(), which is called to remove the driver, the following sequence may be observed: Fix this by finishing the work before cleanup in qedi_remove(). CPU0 CPU1 |qedi_recovery_handler qedi_remove | __qedi_remove | iscsi_host_free | scsi_host_put | //free shost | |iscsi_host_for_each_session |//use qedi->shost Cancel recovery_work and board_disable_work in __qedi_remove().

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2023-54100 since 12/24/2025. The exploitability is told to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/03/2026).

The vulnerability scanner Nessus provides a plugin with the ID 279884 (Linux Distros Unpatched Vulnerability : CVE-2023-54100), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.180, 5.15.112, 6.1.29, 6.2.16 or 6.3.3 eliminates this vulnerability. Applying the patch fa19c533ab19161298f0780bcc6523af88f6fd20/5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151/3738a230831e861503119ee2691c4a7dc56ed60a/89f6023fc321c958a0fb11f143a6eb4544ae3940/124027cd1a624ce0347adcd59241a9966a726b22/c5749639f2d0a1f6cbe187d05f70c2e7c544d748 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (279884) and CERT Bund (WID-SEC-2025-2929). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Open Source Linux Kernel

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.179
• 5.15.111
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.1.16
• 6.1.17
• 6.1.18
• 6.1.19
• 6.1.20
• 6.1.21
• 6.1.22
• 6.1.23
• 6.1.24
• 6.1.25
• 6.1.26
• 6.1.27
• 6.1.28
• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.2.6
• 6.2.7
• 6.2.8
• 6.2.9
• 6.2.10
• 6.2.11
• 6.2.12
• 6.2.13
• 6.2.14
• 6.2.15
• 6.3.0
• 6.3.1
• 6.3.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

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Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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