Vulnerability-Lookup

CVE-2026-74754 (GCVE-0-2026-74754)

Vulnerability from cvelistv5 – Published: 2026-08-26 14:37 – Updated: 2026-10-30 12:30

Title

scsi: core: pair EH runtime PM get and put

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: core: pair EH runtime PM get and put shost->eh_noresume is currently consulted twice in one error handling iteration: once before scsi_autopm_get_host() and once again before scsi_autopm_put_host(). That is racy when a PM-triggered error path flips shost->eh_noresume while the SCSI EH thread is still running. The problem flow looks like this: PM path ufshcd_set_dev_pwr_mode() shost->eh_noresume = 1 ufshcd_execute_start_stop <-- trigger EH ... shost->eh_noresume = 0 EH path scsi_error_handler() if (!shost->eh_noresume) scsi_autopm_get_host() <-- skipped ... if (!shost->eh_noresume) scsi_autopm_put_host() <-- executed later In that case one EH iteration can skip autoresume on entry and still drop a runtime PM reference on exit. That leaves an unmatched runtime PM put and can trigger a runtime PM usage count underflow. Fix this by making eh_noresume a regular bool so it can be accessed with READ_ONCE() and WRITE_ONCE(). Snapshot it once per EH iteration and use that snapshot for both runtime PM get and put decisions.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

6 references

URL	Tags
https://git.kernel.org/stable/c/9aca00c74730f4bc1…
https://git.kernel.org/stable/c/1ec5f6aa38ea990af…
https://git.kernel.org/stable/c/0038a2a75a15d163f…
https://git.kernel.org/stable/c/fdc93f4a801077efb…
https://git.kernel.org/stable/c/e83eed1bea142c8fe…
https://git.kernel.org/stable/c/872f486259ae0bc6b…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: ae0751ffc77e7f21629970fdab5528c573e637f8 , < 9aca00c74730f4bc12d0717d33db637a16ccdfea (git) Affected: ae0751ffc77e7f21629970fdab5528c573e637f8 , < 1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d (git) Affected: ae0751ffc77e7f21629970fdab5528c573e637f8 , < 0038a2a75a15d163f428c93103c6d02d4d231a7a (git) Affected: ae0751ffc77e7f21629970fdab5528c573e637f8 , < fdc93f4a801077efbf1b87570ade8d8f325de62f (git) Affected: ae0751ffc77e7f21629970fdab5528c573e637f8 , < e83eed1bea142c8fe852fd53156845b88252ecd8 (git) Affected: ae0751ffc77e7f21629970fdab5528c573e637f8 , < 872f486259ae0bc6b73ca4735a15d013241f73e9 (git)	guessed
Linux	Linux	Affected: 3.3 Unaffected: 0 , < 3.3 (semver) Unaffected: 6.1.191 , ≤ 6.1.* (semver) Unaffected: 6.6.160 , ≤ 6.6.* (semver) Unaffected: 6.12.114 , ≤ 6.12.* (semver) Unaffected: 6.18.57 , ≤ 6.18.* (semver) Unaffected: 7.1.10 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/scsi_error.c",
            "drivers/ufs/core/ufshcd.c",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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          "product": "Linux",
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            "drivers/ufs/core/ufshcd.c",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "0",
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            },
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              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "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": "6.1.191",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
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                },
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                },
                {
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: pair EH runtime PM get and put\n\nshost-\u003eeh_noresume is currently consulted twice in one error handling\niteration: once before scsi_autopm_get_host() and once again before\nscsi_autopm_put_host().\n\nThat is racy when a PM-triggered error path flips shost-\u003eeh_noresume\nwhile the SCSI EH thread is still running.\n\nThe problem flow looks like this:\nPM path\n  ufshcd_set_dev_pwr_mode()\n    shost-\u003eeh_noresume = 1\n    ufshcd_execute_start_stop  \u003c-- trigger EH\n    ...\n    shost-\u003eeh_noresume = 0\n\nEH path\n  scsi_error_handler()\n    if (!shost-\u003eeh_noresume)\n      scsi_autopm_get_host()  \u003c-- skipped\n    ...\n    if (!shost-\u003eeh_noresume)\n       scsi_autopm_put_host()  \u003c-- executed later\n\nIn that case one EH iteration can skip autoresume on entry and still\ndrop a runtime PM reference on exit. That leaves an unmatched runtime PM\nput and can trigger a runtime PM usage count underflow.\n\nFix this by making eh_noresume a regular bool so it can be accessed with\nREAD_ONCE() and WRITE_ONCE(). Snapshot it once per EH iteration and use\nthat snapshot for both runtime PM get and put decisions."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:30:32.806Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9aca00c74730f4bc12d0717d33db637a16ccdfea"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d"
        },
        {
          "url": "https://git.kernel.org/stable/c/0038a2a75a15d163f428c93103c6d02d4d231a7a"
        },
        {
          "url": "https://git.kernel.org/stable/c/fdc93f4a801077efbf1b87570ade8d8f325de62f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e83eed1bea142c8fe852fd53156845b88252ecd8"
        },
        {
          "url": "https://git.kernel.org/stable/c/872f486259ae0bc6b73ca4735a15d013241f73e9"
        }
      ],
      "title": "scsi: core: pair EH runtime PM get and put",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74754",
    "datePublished": "2026-08-26T14:37:00.766Z",
    "dateReserved": "2026-08-15T05:44:03.931Z",
    "dateUpdated": "2026-10-30T12:30:32.806Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-74754",
      "date": "2026-10-30",
      "epss": "0.00209",
      "percentile": "0.11066"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-23T01:58:41.000Z",
      "cve": "CVE-2026-74754",
      "id": "msrc_CVE-2026-74754",
      "initial_release_date": "2026-08-27T01:07:17.000Z",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "scsi: core: pair EH runtime PM get and put",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-74754.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/scsi/scsi_error.c",
                  "drivers/ufs/core/ufshcd.c",
                  "include/scsi/scsi_host.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
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                    "versionType": "git"
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              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
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                  "drivers/ufs/core/ufshcd.c",
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                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "3.3"
                  },
                  {
                    "lessThan": "3.3",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.191",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.160",
                    "versionType": "semver"
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                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.114",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.57",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.1.*",
                    "status": "unaffected",
                    "version": "7.1.10",
                    "versionType": "semver"
                  },
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                    "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: pair EH runtime PM get and put\n\nshost-\u003eeh_noresume is currently consulted twice in one error handling\niteration: once before scsi_autopm_get_host() and once again before\nscsi_autopm_put_host().\n\nThat is racy when a PM-triggered error path flips shost-\u003eeh_noresume\nwhile the SCSI EH thread is still running.\n\nThe problem flow looks like this:\nPM path\n  ufshcd_set_dev_pwr_mode()\n    shost-\u003eeh_noresume = 1\n    ufshcd_execute_start_stop  \u003c-- trigger EH\n    ...\n    shost-\u003eeh_noresume = 0\n\nEH path\n  scsi_error_handler()\n    if (!shost-\u003eeh_noresume)\n      scsi_autopm_get_host()  \u003c-- skipped\n    ...\n    if (!shost-\u003eeh_noresume)\n       scsi_autopm_put_host()  \u003c-- executed later\n\nIn that case one EH iteration can skip autoresume on entry and still\ndrop a runtime PM reference on exit. That leaves an unmatched runtime PM\nput and can trigger a runtime PM usage count underflow.\n\nFix this by making eh_noresume a regular bool so it can be accessed with\nREAD_ONCE() and WRITE_ONCE(). Snapshot it once per EH iteration and use\nthat snapshot for both runtime PM get and put decisions."
          }
        ],
        "id": "CVE-2026-74754",
        "lastModified": "2026-10-30T13:20:06.040",
        "metrics": {},
        "published": "2026-08-26T15:16:54.500",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          },
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/872f486259ae0bc6b73ca4735a15d013241f73e9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          }
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-10-17T21:44:42+00:00",
      "cve": "CVE-2026-74754",
      "id": "CVE-2026-74754",
      "initial_release_date": "2026-08-26T00:00:00+00:00",
      "product_status:known_affected": "275",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: core: pair EH runtime PM get and put",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74754.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-15T14:21:33Z",
      "cve": "CVE-2026-74754",
      "id": "CVE-2026-74754",
      "initial_release_date": "2026-08-27T00:21:13Z",
      "product_status:known_affected": "350",
      "product_status:known_not_affected": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-74754",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-74754.json",
      "version": "7"
    }
  }
}

BELL-CVE-2026-74754 (CVE-2026-74754)

Vulnerability from osv_bellsoft – Published: 2026-08-29 06:03 – Updated: 2026-10-23 20:02 – Source website

References

URL

Type

https://docs.bell-sw.com/security/cves/CVE-2026-74754

ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Alpaquita:23",
        "name": "linux-lts",
        "purl": "pkg:apk/alpaquita/linux-lts?arch=source\u0026distro=23"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.1.182-r0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Alpaquita:25",
        "name": "linux-lts",
        "purl": "pkg:apk/alpaquita/linux-lts?arch=source\u0026distro=25"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.12.103-r0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Alpaquita:stream",
        "name": "linux-lts",
        "purl": "pkg:apk/alpaquita/linux-lts?arch=source\u0026distro=stream"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.18.55-r0"
            },
            {
              "fixed": "6.18.58-r0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "id": "BELL-CVE-2026-74754",
  "modified": "2026-10-23T20:02:28.132239Z",
  "published": "2026-08-29T06:03:55.85605Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://docs.bell-sw.com/security/cves/CVE-2026-74754"
    }
  ],
  "schema_version": "1.7.4",
  "upstream": [
    "CVE-2026-74754"
  ]
}

FKIE_CVE-2026-74754

Vulnerability from fkie_nvd - Published: 2026-08-26 15:16 - Updated: 2026-10-30 13:20

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0038a2a75a15d163f428c93103c6d02d4d231a7a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/872f486259ae0bc6b73ca4735a15d013241f73e9
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9aca00c74730f4bc12d0717d33db637a16ccdfea
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e83eed1bea142c8fe852fd53156845b88252ecd8
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fdc93f4a801077efbf1b87570ade8d8f325de62f

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/scsi_error.c",
            "drivers/ufs/core/ufshcd.c",
            "include/scsi/scsi_host.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9aca00c74730f4bc12d0717d33db637a16ccdfea",
              "status": "affected",
              "version": "ae0751ffc77e7f21629970fdab5528c573e637f8",
              "versionType": "git"
            },
            {
              "lessThan": "1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d",
              "status": "affected",
              "version": "ae0751ffc77e7f21629970fdab5528c573e637f8",
              "versionType": "git"
            },
            {
              "lessThan": "0038a2a75a15d163f428c93103c6d02d4d231a7a",
              "status": "affected",
              "version": "ae0751ffc77e7f21629970fdab5528c573e637f8",
              "versionType": "git"
            },
            {
              "lessThan": "fdc93f4a801077efbf1b87570ade8d8f325de62f",
              "status": "affected",
              "version": "ae0751ffc77e7f21629970fdab5528c573e637f8",
              "versionType": "git"
            },
            {
              "lessThan": "e83eed1bea142c8fe852fd53156845b88252ecd8",
              "status": "affected",
              "version": "ae0751ffc77e7f21629970fdab5528c573e637f8",
              "versionType": "git"
            },
            {
              "lessThan": "872f486259ae0bc6b73ca4735a15d013241f73e9",
              "status": "affected",
              "version": "ae0751ffc77e7f21629970fdab5528c573e637f8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/scsi_error.c",
            "drivers/ufs/core/ufshcd.c",
            "include/scsi/scsi_host.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.3"
            },
            {
              "lessThan": "3.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "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: pair EH runtime PM get and put\n\nshost-\u003eeh_noresume is currently consulted twice in one error handling\niteration: once before scsi_autopm_get_host() and once again before\nscsi_autopm_put_host().\n\nThat is racy when a PM-triggered error path flips shost-\u003eeh_noresume\nwhile the SCSI EH thread is still running.\n\nThe problem flow looks like this:\nPM path\n  ufshcd_set_dev_pwr_mode()\n    shost-\u003eeh_noresume = 1\n    ufshcd_execute_start_stop  \u003c-- trigger EH\n    ...\n    shost-\u003eeh_noresume = 0\n\nEH path\n  scsi_error_handler()\n    if (!shost-\u003eeh_noresume)\n      scsi_autopm_get_host()  \u003c-- skipped\n    ...\n    if (!shost-\u003eeh_noresume)\n       scsi_autopm_put_host()  \u003c-- executed later\n\nIn that case one EH iteration can skip autoresume on entry and still\ndrop a runtime PM reference on exit. That leaves an unmatched runtime PM\nput and can trigger a runtime PM usage count underflow.\n\nFix this by making eh_noresume a regular bool so it can be accessed with\nREAD_ONCE() and WRITE_ONCE(). Snapshot it once per EH iteration and use\nthat snapshot for both runtime PM get and put decisions."
    }
  ],
  "id": "CVE-2026-74754",
  "lastModified": "2026-10-30T13:20:06.040",
  "metrics": {},
  "published": "2026-08-26T15:16:54.500",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0038a2a75a15d163f428c93103c6d02d4d231a7a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/872f486259ae0bc6b73ca4735a15d013241f73e9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9aca00c74730f4bc12d0717d33db637a16ccdfea"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e83eed1bea142c8fe852fd53156845b88252ecd8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fdc93f4a801077efbf1b87570ade8d8f325de62f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-5JQH-PXWF-WG8M

Vulnerability from github – Published: 2026-10-15 12:30 – Updated: 2026-10-30 15:33

Details

In the Linux kernel, the following vulnerability has been resolved:

scsi: core: pair EH runtime PM get and put

shost->eh_noresume is currently consulted twice in one error handling iteration: once before scsi_autopm_get_host() and once again before scsi_autopm_put_host().

That is racy when a PM-triggered error path flips shost->eh_noresume while the SCSI EH thread is still running.

The problem flow looks like this: PM path ufshcd_set_dev_pwr_mode() shost->eh_noresume = 1 ufshcd_execute_start_stop <-- trigger EH ... shost->eh_noresume = 0

EH path scsi_error_handler() if (!shost->eh_noresume) scsi_autopm_get_host() <-- skipped ... if (!shost->eh_noresume) scsi_autopm_put_host() <-- executed later

In that case one EH iteration can skip autoresume on entry and still drop a runtime PM reference on exit. That leaves an unmatched runtime PM put and can trigger a runtime PM usage count underflow.

Fix this by making eh_noresume a regular bool so it can be accessed with READ_ONCE() and WRITE_ONCE(). Snapshot it once per EH iteration and use that snapshot for both runtime PM get and put decisions.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-74754"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-26T15:16:54Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: pair EH runtime PM get and put\n\nshost-\u003eeh_noresume is currently consulted twice in one error handling\niteration: once before scsi_autopm_get_host() and once again before\nscsi_autopm_put_host().\n\nThat is racy when a PM-triggered error path flips shost-\u003eeh_noresume\nwhile the SCSI EH thread is still running.\n\nThe problem flow looks like this:\nPM path\n  ufshcd_set_dev_pwr_mode()\n    shost-\u003eeh_noresume = 1\n    ufshcd_execute_start_stop  \u003c-- trigger EH\n    ...\n    shost-\u003eeh_noresume = 0\n\nEH path\n  scsi_error_handler()\n    if (!shost-\u003eeh_noresume)\n      scsi_autopm_get_host()  \u003c-- skipped\n    ...\n    if (!shost-\u003eeh_noresume)\n       scsi_autopm_put_host()  \u003c-- executed later\n\nIn that case one EH iteration can skip autoresume on entry and still\ndrop a runtime PM reference on exit. That leaves an unmatched runtime PM\nput and can trigger a runtime PM usage count underflow.\n\nFix this by making eh_noresume a regular bool so it can be accessed with\nREAD_ONCE() and WRITE_ONCE(). Snapshot it once per EH iteration and use\nthat snapshot for both runtime PM get and put decisions.",
  "id": "GHSA-5jqh-pxwf-wg8m",
  "modified": "2026-10-30T15:33:11Z",
  "published": "2026-10-15T12:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74754"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0038a2a75a15d163f428c93103c6d02d4d231a7a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/872f486259ae0bc6b73ca4735a15d013241f73e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9aca00c74730f4bc12d0717d33db637a16ccdfea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e83eed1bea142c8fe852fd53156845b88252ecd8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fdc93f4a801077efbf1b87570ade8d8f325de62f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

MSRC_CVE-2026-74754

Vulnerability from csaf_microsoft - Published: 2026-08-27 01:07 - Updated: 2026-09-23 01:58

Summary

scsi: core: pair EH runtime PM get and put

Scope

1 vulnerability in this advisory, including CVE-2026-74754.

CVE-2026-74754

Known affected: 2 products

Open the full advisory

UBUNTU-CVE-2026-74754 (CVE-2026-74754)

Vulnerability from osv_ubuntu – Published: 2026-08-26 15:16 – Updated: 2026-10-30 18:53 – Source website

Details

Severity

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2026-74754	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-74754	REPORT
	https://git.kernel.org/stable/c/e83eed1bea142c8fe…	REPORT
	https://git.kernel.org/stable/c/872f486259ae0bc6b…	REPORT

JSON

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Loading 1.0 MB of JSON…

WID-SEC-W-2026-3042

Vulnerability from csaf_certbund - Published: 2026-08-26 22:00 - Updated: 2026-10-08 22:00

Summary

Linux Kernel: Mehrere Schwachstellen

Severity

Hoch

Scope

92 vulnerabilities in this advisory, including CVE-2026-74754.

CVE-2026-74754

Known affected: 9 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-74754 (GCVE-0-2026-74754)

BELL-CVE-2026-74754 (CVE-2026-74754)

FKIE_CVE-2026-74754

GHSA-5JQH-PXWF-WG8M

MSRC_CVE-2026-74754

UBUNTU-CVE-2026-74754 (CVE-2026-74754)

WID-SEC-W-2026-3042

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour