CVE-2026-68396 (GCVE-0-2026-68396)
Vulnerability from cvelistv5
Published
2026-08-10 12:04
Modified
2026-08-17 05:04
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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
| URL | Tags | |
|---|---|---|
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/scsi/hosts.c",
"drivers/scsi/scsi_error.c",
"drivers/scsi/scsi_priv.h",
"include/scsi/scsi_host.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "866efe8ae8b8b4d095501001b026e1022734be28",
"status": "affected",
"version": "6eb045e092efefafc6687409a6fa6d1dabf0fb69",
"versionType": "git"
},
{
"lessThan": "c7a15091237205770bd9bd4d14eb1f3029d97a34",
"status": "affected",
"version": "6eb045e092efefafc6687409a6fa6d1dabf0fb69",
"versionType": "git"
},
{
"lessThan": "24d7abda6a2a19e113334accc10029f6a4b57257",
"status": "affected",
"version": "6eb045e092efefafc6687409a6fa6d1dabf0fb69",
"versionType": "git"
},
{
"lessThan": "dccf3b1798b70f94e958b3d00b83010399e6fb05",
"status": "affected",
"version": "6eb045e092efefafc6687409a6fa6d1dabf0fb69",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/scsi/hosts.c",
"drivers/scsi/scsi_error.c",
"drivers/scsi/scsi_priv.h",
"include/scsi/scsi_host.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.5"
},
{
"lessThan": "5.5",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.101",
"versionStartIncluding": "5.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.42",
"versionStartIncluding": "5.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.6",
"versionStartIncluding": "5.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "5.5",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: wake eh reliably when using scsi_schedule_eh\n\nDrivers which use the scsi_schedule_eh function to run the error handler\ncurrently risk the error handler thread never waking once all commands are\ntimed out or inactive. There is no enforced memory order between setting\nthe host into error recovery state and counting busy commands. This can\nresult in a race with scsi_dec_host_busy where neither CPU sees both\nconditions of all commands inactive and the host error state to request\nwaking the error handler.\n\nTo fix this, run the scsi_schedule_eh\u0027s scsi_eh_wakeup from a new work item\nwhich will use rcu to ensure scsi_schedule_eh\u0027s call to scsi_host_busy will\noccur after the error state is globally visible and will be seen by any\ncurrent scsi_dec_host_busy callers."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T05:04:44.555Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/866efe8ae8b8b4d095501001b026e1022734be28"
},
{
"url": "https://git.kernel.org/stable/c/c7a15091237205770bd9bd4d14eb1f3029d97a34"
},
{
"url": "https://git.kernel.org/stable/c/24d7abda6a2a19e113334accc10029f6a4b57257"
},
{
"url": "https://git.kernel.org/stable/c/dccf3b1798b70f94e958b3d00b83010399e6fb05"
}
],
"title": "scsi: core: wake eh reliably when using scsi_schedule_eh",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-68396",
"datePublished": "2026-08-10T12:04:15.607Z",
"dateReserved": "2026-07-30T09:28:09.389Z",
"dateUpdated": "2026-08-17T05:04:44.555Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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