CVE-2026-68396
scsi: core: wake eh reliably when using scsi_schedule_eh
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ 6eb045e092efefafc6687409a6fa6d1dabf0fb69; < d1280822db11c423ad47b43c9d69a5e56199161e (affected, git) ≥ 6eb045e092efefafc6687409a6fa6d1dabf0fb69; < 4827c824a203eea2c0aa5bfdb13d5c5038cc84da (affected, git) ≥ 6eb045e092efefafc6687409a6fa6d1dabf0fb69; < 866efe8ae8b8b4d095501001b026e1022734be28 (affected, git) ≥ 6eb045e092efefafc6687409a6fa6d1dabf0fb69; < c7a15091237205770bd9bd4d14eb1f3029d97a34 (affected, git) ≥ 6eb045e092efefafc6687409a6fa6d1dabf0fb69; < 24d7abda6a2a19e113334accc10029f6a4b57257 (affected, git) ≥ 6eb045e092efefafc6687409a6fa6d1dabf0fb69; < dccf3b1798b70f94e958b3d00b83010399e6fb05 (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
5.5 (affected) ≥ 0; < 5.5 (unaffected, semver) ≥ 6.1.191; ≤ 6.1.* (unaffected, semver) ≥ 6.6.160; ≤ 6.6.* (unaffected, semver) ≥ 6.12.101; ≤ 6.12.* (unaffected, semver) ≥ 6.18.42; ≤ 6.18.* (unaffected, semver) ≥ 7.1.6; ≤ 7.1.* (unaffected, semver) ≥ 7.2; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/d1280822db11c423ad47b43c9d69a5e56199161eCNA: Linux
- https://git.kernel.org/stable/c/4827c824a203eea2c0aa5bfdb13d5c5038cc84daCNA: Linux
- https://git.kernel.org/stable/c/866efe8ae8b8b4d095501001b026e1022734be28CNA: Linux
- https://git.kernel.org/stable/c/c7a15091237205770bd9bd4d14eb1f3029d97a34CNA: Linux
- https://git.kernel.org/stable/c/24d7abda6a2a19e113334accc10029f6a4b57257CNA: Linux
- https://git.kernel.org/stable/c/dccf3b1798b70f94e958b3d00b83010399e6fb05CNA: Linux
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