SB20260720238 - Always-Incorrect Control Flow Implementation in Linux kernel scsi driver

Description

This security bulletin contains information about 1 vulnerability.

1) Always-Incorrect Control Flow Implementation (CVE-ID: CVE-2026-64003)

CWE-ID: CWE-670 - Always-Incorrect Control Flow Implementation

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 state handling in scsi_run_host_queues() when processing requeued commands during SCSI host recovery and device removal. A local user can trigger SCSI error recovery and device removal conditions to cause a denial of service.

The issue can leave requeued requests stuck and cause the affected device removal process to hang.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/15fb19af49f2073ed77fad16aaabc648b0ca6800
• https://git.kernel.org/stable/c/475f2b37a78f4c698967a7f14f325f04e24c9175
• https://git.kernel.org/stable/c/7205b58702273baf21d6ba7992e6ba15852325f7
• https://git.kernel.org/stable/c/c740e13e7fe32d8e4d9a1699f65b8daf6709895a
• https://git.kernel.org/stable/c/d4dddfecdbb5467bef158d4e1486459808357fef