CVE-2026-97948

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97948", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:18:58.204Z", "datePublished": "2026-09-25T10:22:57.757Z", "dateUpdated": "2026-10-19T09:11:14.563Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:11:14.563Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/eeh: Fix recursive locking on devices without EEH sensitive driver\n\nThe commit 1010b4c012b0 (\"powerpc/eeh: Make EEH driver device hotplug\nsafe\") refactored the EEH code such that the pci_rescan_remove_lock is\nheld at the beginning of eeh_handle_normal_event() and the\neeh_reset_device() is called with that lock being held. Looks like the\ncommit missed to remove the existing lock/unlock inside eeh_rmv_device()\nwhich is no longer necessary. This is causing the eehd to hang on the\nlock which it actually holds when that code path is taken.\n\n[<0>] 0xc00000011c78f870\n[<0>] __switch_to+0xfc/0x1a0\n[<0>] pci_lock_rescan_remove+0x30/0x44\n[<0>] eeh_rmv_device+0x290/0x2e0\n[<0>] eeh_pe_dev_traverse+0x80/0x130\n[<0>] eeh_reset_device+0xcc/0x23c\n[<0>] eeh_handle_normal_event+0x830/0xa80\n[<0>] eeh_event_handler+0xf8/0x190\n[<0>] kthread+0x194/0x1b0\n[<0>] start_kernel_thread+0x14/0x18\n\nThe issue is seen for cases where the errors are detected on the PHB\ndirectly AND|OR for devices where the driver error_detected() returns\nPCI_ERS_RESULT_NEED_RESET, and driver being not EEH sensitive(i.e no\nerror handlers like slot_reset(), resume() etc defined)."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/powerpc/kernel/eeh_driver.c"], "versions": [{"version": 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"lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "5.10.241", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.190", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.148", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.102", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.42", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3833dfae0680b6b16e2469fbc90aa48376311cd8"}, {"url": "https://git.kernel.org/stable/c/24524fca27da674668941440e8e05cdfec0b0222"}, {"url": "https://git.kernel.org/stable/c/a58531181363219fa5de2b53d5d7274dcdfca98b"}, {"url": "https://git.kernel.org/stable/c/460fab22b65138531082910702f74b048b25237b"}, {"url": "https://git.kernel.org/stable/c/102e3dc5ab5ba052e294819e83384166b242c1ec"}, {"url": "https://git.kernel.org/stable/c/2920af33d097ca335e492b346af70b72986ad6dc"}, {"url": "https://git.kernel.org/stable/c/85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4"}, {"url": "https://git.kernel.org/stable/c/c5e68706527968282e49de205cc2b935823cb88a"}], "title": "powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/powerpc/kernel/eeh_driver.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3833dfae0680b6b16e2469fbc90aa48376311cd8", "status": "affected", "version": "502f08831a9afb72dc98a56ae6504da43e93b250", "versionType": "git"}, {"lessThan": "24524fca27da674668941440e8e05cdfec0b0222", "status": "affected", "version": "f56e004b781719d8fdf6c9619b15caf2579bc1f2", "versionType": "git"}, {"lessThan": "a58531181363219fa5de2b53d5d7274dcdfca98b", "status": "affected", "version": "59c6d3d81d42bf543c90597b4f38c53d6874c5a1", "versionType": "git"}, {"lessThan": "460fab22b65138531082910702f74b048b25237b", "status": "affected", "version": "a426e8a6ae161f51888585b065db0f8f93ab2e16", "versionType": "git"}, {"lessThan": "102e3dc5ab5ba052e294819e83384166b242c1ec", "status": "affected", "version": "d2c60a8a387e9fcc28447ef36c03f8e49fd052a6", "versionType": "git"}, {"lessThan": "2920af33d097ca335e492b346af70b72986ad6dc", "status": "affected", "version": "1010b4c012b0d78dfb9d3132b49aa2ef024a07a7", "versionType": "git"}, {"lessThan": "85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4", "status": "affected", "version": "1010b4c012b0d78dfb9d3132b49aa2ef024a07a7", "versionType": "git"}, {"lessThan": "c5e68706527968282e49de205cc2b935823cb88a", "status": "affected", "version": "1010b4c012b0d78dfb9d3132b49aa2ef024a07a7", "versionType": "git"}, {"status": "affected", "version": "d42bbd8f30ac38b1ce54715bf08ec3dac18d6b25", "versionType": "git"}, {"status": "affected", "version": "19d5036e7ad766cf212aebec23b9f1d7924a62bc", "versionType": "git"}, {"lessThan": "5.10.271", "status": "affected", "version": "5.10.241", "versionType": "semver"}, {"lessThan": "5.15.222", "status": "affected", "version": "5.15.190", "versionType": "semver"}, {"lessThan": "6.1.189", "status": "affected", "version": "6.1.148", "versionType": "semver"}, {"lessThan": "6.6.158", "status": "affected", "version": "6.6.102", "versionType": "semver"}, {"lessThan": "6.12.111", "status": "affected", "version": "6.12.42", "versionType": "semver"}, {"lessThan": "6.16", "status": "affected", "version": "6.15.10", "versionType": "semver"}, {"lessThan": "6.17", "status": "affected", "version": "6.16.1", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/powerpc/kernel/eeh_driver.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"lessThan": "6.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\npowerpc/eeh: Fix recursive locking on devices without EEH sensitive driver\n\nThe commit 1010b4c012b0 (\"powerpc/eeh: Make EEH driver device hotplug\nsafe\") refactored the EEH code such that the pci_rescan_remove_lock is\nheld at the beginning of eeh_handle_normal_event() and the\neeh_reset_device() is called with that lock being held. Looks like the\ncommit missed to remove the existing lock/unlock inside eeh_rmv_device()\nwhich is no longer necessary. This is causing the eehd to hang on the\nlock which it actually holds when that code path is taken.\n\n[<0>] 0xc00000011c78f870\n[<0>] __switch_to+0xfc/0x1a0\n[<0>] pci_lock_rescan_remove+0x30/0x44\n[<0>] eeh_rmv_device+0x290/0x2e0\n[<0>] eeh_pe_dev_traverse+0x80/0x130\n[<0>] eeh_reset_device+0xcc/0x23c\n[<0>] eeh_handle_normal_event+0x830/0xa80\n[<0>] eeh_event_handler+0xf8/0x190\n[<0>] kthread+0x194/0x1b0\n[<0>] start_kernel_thread+0x14/0x18\n\nThe issue is seen for cases where the errors are detected on the PHB\ndirectly AND|OR for devices where the driver error_detected() returns\nPCI_ERS_RESULT_NEED_RESET, and driver being not EEH sensitive(i.e no\nerror handlers like slot_reset(), resume() etc defined)."}], "id": "CVE-2026-97948", "lastModified": "2026-10-19T10:17:46.023", "metrics": {}, "published": "2026-09-25T11:17:22.317", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/102e3dc5ab5ba052e294819e83384166b242c1ec"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/24524fca27da674668941440e8e05cdfec0b0222"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2920af33d097ca335e492b346af70b72986ad6dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3833dfae0680b6b16e2469fbc90aa48376311cd8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/460fab22b65138531082910702f74b048b25237b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a58531181363219fa5de2b53d5d7274dcdfca98b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c5e68706527968282e49de205cc2b935823cb88a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver", "id": "2541132", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541132"}, "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-764", "details": ["A flaw was found in the Linux kernel's PowerPC Enhanced Error Handling (EEH) subsystem. A recursive locking issue occurs during device reset handling when an error recovery process attempts to acquire a lock it already holds. When an error is detected on an affected device, this condition causes the error handling service to deadlock, resulting in a denial of service (DoS)."], "name": "CVE-2026-97948", "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97948\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97948\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97948.mbox"], "threat_severity": "Low"}

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