CVE-2026-74754

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74754", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.931Z", "datePublished": "2026-08-26T14:37:00.766Z", "dateUpdated": "2026-10-30T12:30:32.806Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:30:32.806Z"}, "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->eh_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->eh_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->eh_noresume = 1\n ufshcd_execute_start_stop <-- trigger EH\n ...\n shost->eh_noresume = 0\n\nEH path\n scsi_error_handler()\n if (!shost->eh_noresume)\n scsi_autopm_get_host() <-- skipped\n ...\n if (!shost->eh_noresume)\n scsi_autopm_put_host() <-- 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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/scsi/scsi_error.c", "drivers/ufs/core/ufshcd.c", "include/scsi/scsi_host.h"], "versions": [{"version": "ae0751ffc77e7f21629970fdab5528c573e637f8", "lessThan": "9aca00c74730f4bc12d0717d33db637a16ccdfea", "status": "affected", "versionType": "git"}, {"version": "ae0751ffc77e7f21629970fdab5528c573e637f8", "lessThan": "1ec5f6aa38ea990af37c49af7a4bb3db00da7f9d", "status": "affected", "versionType": "git"}, {"version": "ae0751ffc77e7f21629970fdab5528c573e637f8", "lessThan": "0038a2a75a15d163f428c93103c6d02d4d231a7a", "status": "affected", "versionType": "git"}, {"version": "ae0751ffc77e7f21629970fdab5528c573e637f8", "lessThan": "fdc93f4a801077efbf1b87570ade8d8f325de62f", "status": "affected", "versionType": "git"}, {"version": "ae0751ffc77e7f21629970fdab5528c573e637f8", "lessThan": "e83eed1bea142c8fe852fd53156845b88252ecd8", "status": "affected", "versionType": "git"}, {"version": "ae0751ffc77e7f21629970fdab5528c573e637f8", "lessThan": "872f486259ae0bc6b73ca4735a15d013241f73e9", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/scsi/scsi_error.c", "drivers/ufs/core/ufshcd.c", "include/scsi/scsi_host.h"], "versions": [{"version": "3.3", "status": "affected"}, {"version": "0", "lessThan": "3.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.10", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "7.1.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.3", "versionEndExcluding": "7.2"}]}]}], "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"}}}}

{}

{"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->eh_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->eh_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->eh_noresume = 1\n ufshcd_execute_start_stop <-- trigger EH\n ...\n shost->eh_noresume = 0\n\nEH path\n scsi_error_handler()\n if (!shost->eh_noresume)\n scsi_autopm_get_host() <-- skipped\n ...\n if (!shost->eh_noresume)\n scsi_autopm_put_host() <-- 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"}

{"bugzilla": {"description": "kernel: scsi: core: pair EH runtime PM get and put", "id": "2524429", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524429"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-911", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nscsi: core: pair EH runtime PM get and put\nshost->eh_noresume is currently consulted twice in one error handling\niteration: once before scsi_autopm_get_host() and once again before\nscsi_autopm_put_host().\nThat is racy when a PM-triggered error path flips shost->eh_noresume\nwhile the SCSI EH thread is still running.\nThe problem flow looks like this:\nPM path\nufshcd_set_dev_pwr_mode()\nshost->eh_noresume = 1\nufshcd_execute_start_stop <-- trigger EH\n...\nshost->eh_noresume = 0\nEH path\nscsi_error_handler()\nif (!shost->eh_noresume)\nscsi_autopm_get_host() <-- skipped\n...\nif (!shost->eh_noresume)\nscsi_autopm_put_host() <-- executed later\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.\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.", "A flaw was found in the Linux kernel SCSI core. A race condition exists where the `shost->eh_noresume` flag is checked multiple times during error handling. This can lead to an incorrect handling of power management (PM) references, specifically an unmatched reference put. The consequence is a runtime PM usage count underflow, which could result in system instability or a denial of service."], "name": "CVE-2026-74754", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74754\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74754\nhttps://lore.kernel.org/linux-cve-announce/2026082600-CVE-2026-74754-2bb1@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ae0751ffc77e7f21629970fdab5528c573e637f8,e83eed1bea142c8fe852fd53156845b88252ecd8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ae0751ffc77e7f21629970fdab5528c573e637f8,872f486259ae0bc6b73ca4735a15d013241f73e9)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.10,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-26T16:00:07.462983+00:00", "updated": "2026-08-28T16:30:17.966868+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}