CVE-2026-68396
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.
Affected versions
Linux kernel versions
5.5
and later are affected. Fixed in
6.12.101,
6.18.42,
7.1.6,
7.2
and their respective stable series.
References
4 totalFrequently asked questions
-
What is CVE-2026-68396?
CVE-2026-68396 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.5 onward and has been patched in 6.12.101, 6.18.42, 7.1.6 and others. CVE-2026-68396 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-68396?
Yes. CVE-2026-68396 has been patched. Fixed versions include 6.12.101, 6.18.42, 7.1.6 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-68396 actively exploited?
No. CVE-2026-68396 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.