CVE-2021-47565: scsi: mpt3sas: Fix kernel panic during drive powercycle test

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: 2024-05-24 · updated 2026-06-17
Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: mpt3sas: Fix kernel panic during drive powercycle test While looping over shost's sdev list it is possible that one of the drives is getting removed and its sas_target object is freed but its sdev object remains intact. Consequently, a kernel panic can occur while the driver is trying to access the sas_address field of sas_target object without also checking the sas_target object for NULL.

Affected products

Linux kernel: from 3.8 before 4.4.294; from 4.5 before 4.9.292; from 4.10 before 4.14.257; from 4.15 before 4.19.219; from 4.20 before 5.4.163; from 5.5 before 5.10.83 — fixed in 4.14.257, 4.19.219, 4.4.294, 4.9.292, 5.10.83, 5.15.6

How to fix

Upgrade to a fixed version: Linux kernel 4.14.257, 4.19.219, 4.4.294, 4.9.292. Check the vendor advisory for mitigations.

References

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