SB20260828123 - Race condition in Linux kernel scsi hisi_sas driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-80653)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper synchronization in the hisi_sas v3 hardware SCSI device link handling when executing a remote PHY link reset concurrently with driver removal. A local user can trigger concurrent link reset and device removal operations to cause a kernel warning and destabilize the system.

The issue occurs during SAS PHY revalidation and device cleanup in the hisi_sas driver.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/4867dba229292e13fc19ed865ec1839661952ff9
• https://git.kernel.org/stable/c/67b85a88265df19f049241d8c00571a5408f4eeb
• https://git.kernel.org/stable/c/cb414aff28e18e6f5cff9f87ea31376ed8af317b