CVE-2026-64003
In the Linux kernel, the following vulnerability has been resolved:
scsi: core: Run queues for all non-SDEV_DEL devices from scsi_run_host_queues
While a SCSI host is in a recovery state, scsi_mq_requeue_cmd() will not set the requeue list for a requeued command to be kicked in the future. The expectation is a call to scsi_run_host_queues() will kick all SCSI devices once the recovery state is cleared.
However, scsi_run_host_queues() uses shost_for_each_device() which uses scsi_device_get() and so will ignore devices in a partially removed state like SDEV_CANCEL. But these devices may also have requeued requests, leaving their requests stuck from not being kicked and causing the removal process of the device to hang.
scsi_run_host_queues() needs to run against more devices than the macro shost_for_each_device() allows. Instead of using the too limiting scsi_device_get() state checks, only ignore devices in SDEV_DEL state or when unable to acquire a reference. Attempt to run the queues for all other devices when scsi_run_host_queues() is called.
No affected software listed.
- 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
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A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
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