Linux Kernel up to 5.10.101/5.15.24/5.16.10 pm8001 mpi_ssp_completion use after free

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.10.101/5.15.24/5.16.10 and classified as critical. The impacted element is the function mpi_ssp_completion of the component pm8001. Performing a manipulation results in use after free. This vulnerability is known as CVE-2022-48792. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.10.101/5.15.24/5.16.10. This affects the function mpi_ssp_completion of the component pm8001. 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: pm8001: Fix use-after-free for aborted SSP/STP sas_task Currently a use-after-free may occur if a sas_task is aborted by the upper layer before we handle the I/O completion in mpi_ssp_completion() or mpi_sata_completion(). In this case, the following are the two steps in handling those I/O completions: - Call complete() to inform the upper layer handler of completion of the I/O. - Release driver resources associated with the sas_task in pm8001_ccb_task_free() call. When complete() is called, the upper layer may free the sas_task. As such, we should not touch the associated sas_task afterwards, but we do so in the pm8001_ccb_task_free() call. Fix by swapping the complete() and pm8001_ccb_task_free() calls ordering.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-48792 since 07/16/2024. 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 03/05/2025).

The vulnerability scanner Nessus provides a plugin with the ID 225787 (Linux Distros Unpatched Vulnerability : CVE-2022-48792), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.102, 5.15.25 or 5.16.11 eliminates this vulnerability. Applying the patch fe9ac3eaa2e3/d9d93f32534a/f61f9fccb2cb/df7abcaa1246 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 vulnerability database at Tenable (225787). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.101
• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.15.22
• 5.15.23
• 5.15.24
• 5.16.0
• 5.16.1
• 5.16.2
• 5.16.3
• 5.16.4
• 5.16.5
• 5.16.6
• 5.16.7
• 5.16.8
• 5.16.9
• 5.16.10

License

• open-source

Website

• Vendor: https://www.kernel.org/

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