FKIE_CVE-2026-68396

Vulnerability from fkie_nvd - Published: 2026-08-10 13:20 - Updated: 2026-08-17 06:17
Severity
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24d7abda6a2a19e113334accc10029f6a4b57257
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/866efe8ae8b8b4d095501001b026e1022734be28
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c7a15091237205770bd9bd4d14eb1f3029d97a34
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dccf3b1798b70f94e958b3d00b83010399e6fb05
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-68396",
  "lastModified": "2026-08-17T06:17:48.313",
  "metrics": {},
  "published": "2026-08-10T13:20:33.010",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/24d7abda6a2a19e113334accc10029f6a4b57257"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/866efe8ae8b8b4d095501001b026e1022734be28"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c7a15091237205770bd9bd4d14eb1f3029d97a34"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dccf3b1798b70f94e958b3d00b83010399e6fb05"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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