Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: core: wake eh reliably when using scsi_schedule_eh Drivers which use the scsi_schedule_eh function to run the error handler currently risk the error handler thread never waking once all commands are timed out or inactive. There is no enforced memory order between setting the host into error recovery state and counting busy commands. This can result in a race with scsi_dec_host_busy where neither CPU sees both conditions of all commands inactive and the host error state to request waking the error handler. To fix this, run the scsi_schedule_eh's scsi_eh_wakeup from a new work item which will use rcu to ensure scsi_schedule_eh's call to scsi_host_busy will occur after the error state is globally visible and will be seen by any current scsi_dec_host_busy callers.
References
- https://git.kernel.org/stable/c/24d7abda6a2a19e113334accc10029f6a4b57257
- https://git.kernel.org/stable/c/866efe8ae8b8b4d095501001b026e1022734be28
- https://git.kernel.org/stable/c/c7a15091237205770bd9bd4d14eb1f3029d97a34
- https://git.kernel.org/stable/c/dccf3b1798b70f94e958b3d00b83010399e6fb05
FAQ
What is CVE-2026-68396?
CVE-2026-68396 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: scsi: core: wake eh reliably when using scsi_schedule_eh Drivers which use the scsi_schedule_eh function to run the error handler ...
How severe is CVE-2026-68396?
CVSS scoring is not yet available for CVE-2026-68396. Check NVD for updates.
Is there a patch for CVE-2026-68396?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.