CVE-2022-48792: scsi: pm8001: Fix use-after-free for aborted SSP/STP sas_task

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-16 · updated 2026-08-04
Weakness: CWE-416

Description

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.

Affected products

Linux kernel: before 5.10.102; from 5.11 before 5.15.25; from 5.16 before 5.16.11 — fixed in 5.10.102, 5.15.25, 5.16.11

How to fix

Upgrade to a fixed version: Linux kernel 5.10.102, 5.15.25, 5.16.11. Check the vendor advisory for mitigations.

References

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