CVE-2026-97946

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97946", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:18:58.204Z", "datePublished": "2026-09-25T10:22:56.572Z", "dateUpdated": "2026-10-19T09:11:12.606Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:11:12.606Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/amd_node: Fix PCI device reference counting in amd_smn_init()\n\nThe local \"root\" pointer is a temporary variable used during the device\nsearch. Therefore, refcount related to the search iterators should be cleaned\nup after the search is complete.\n\nUse the __free() cleanup macro to ensure the refcount is decremented when the\ntemporary pointer goes out of scope.\n\nAdditionally, increment the refcount when caching a root pointer. This ensures\nthe in-use refcount is separate from the temporary search refcounting.\n\nFinally, drop the redundant \"root = NULL\" before the second search loop. The\npci_get_class() iterator always decrements the refcount of its \"from\"\nargument, so the first loop can only fall through with \"root\" already NULL."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/x86/kernel/amd_node.c"], "versions": [{"version": "0a4b61d9c2e496b5f0a10e29e355a1465c8738bb", "lessThan": "84e3a71d11d8593c127b468d75b2653af5074f81", "status": "affected", "versionType": "git"}, {"version": "0a4b61d9c2e496b5f0a10e29e355a1465c8738bb", "lessThan": "aa2a4277ad42fd8f918c6dc652473946a253f7b0", "status": "affected", "versionType": "git"}, {"version": "0a4b61d9c2e496b5f0a10e29e355a1465c8738bb", "lessThan": "27600805e62f800bacf990354632eae4e487d34c", "status": "affected", "versionType": "git"}, {"version": "c4ad899a33198ab6335732c769835d035e66894a", "status": "affected", "versionType": "git"}, {"version": "6.17.8", "lessThan": "6.18", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/x86/kernel/amd_node.c"], "versions": [{"version": "6.18", "status": "affected"}, {"version": "0", "lessThan": "6.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "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": "6.18", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17.8"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/84e3a71d11d8593c127b468d75b2653af5074f81"}, {"url": "https://git.kernel.org/stable/c/aa2a4277ad42fd8f918c6dc652473946a253f7b0"}, {"url": "https://git.kernel.org/stable/c/27600805e62f800bacf990354632eae4e487d34c"}], "title": "x86/amd_node: Fix PCI device reference counting in amd_smn_init()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/x86/kernel/amd_node.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "84e3a71d11d8593c127b468d75b2653af5074f81", "status": "affected", "version": "0a4b61d9c2e496b5f0a10e29e355a1465c8738bb", "versionType": "git"}, {"lessThan": "aa2a4277ad42fd8f918c6dc652473946a253f7b0", "status": "affected", "version": "0a4b61d9c2e496b5f0a10e29e355a1465c8738bb", "versionType": "git"}, {"lessThan": "27600805e62f800bacf990354632eae4e487d34c", "status": "affected", "version": "0a4b61d9c2e496b5f0a10e29e355a1465c8738bb", "versionType": "git"}, {"status": "affected", "version": "c4ad899a33198ab6335732c769835d035e66894a", "versionType": "git"}, {"lessThan": "6.18", "status": "affected", "version": "6.17.8", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/x86/kernel/amd_node.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"lessThan": "6.18", "status": "unaffected", "version": "0", "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\nx86/amd_node: Fix PCI device reference counting in amd_smn_init()\n\nThe local \"root\" pointer is a temporary variable used during the device\nsearch. Therefore, refcount related to the search iterators should be cleaned\nup after the search is complete.\n\nUse the __free() cleanup macro to ensure the refcount is decremented when the\ntemporary pointer goes out of scope.\n\nAdditionally, increment the refcount when caching a root pointer. This ensures\nthe in-use refcount is separate from the temporary search refcounting.\n\nFinally, drop the redundant \"root = NULL\" before the second search loop. The\npci_get_class() iterator always decrements the refcount of its \"from\"\nargument, so the first loop can only fall through with \"root\" already NULL."}], "id": "CVE-2026-97946", "lastModified": "2026-10-19T10:17:45.850", "metrics": {}, "published": "2026-09-25T11:17:22.110", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/27600805e62f800bacf990354632eae4e487d34c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/84e3a71d11d8593c127b468d75b2653af5074f81"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aa2a4277ad42fd8f918c6dc652473946a253f7b0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: x86/amd_node: Fix PCI device reference counting in amd_smn_init()", "id": "2541193", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541193"}, "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": ["A flaw was found in the Linux kernel. Improper reference counting during AMD PCI root device initialization and caching in the amd_smn_init() function fails to properly track device lifecycles. Under certain conditions, this flaw may allow a local attacker to cause a Denial of Service (DoS) or system instability due to premature resource deallocation or memory leaks."], "name": "CVE-2026-97946", "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97946\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97946\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97946.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0a4b61d9c2e496b5f0a10e29e355a1465c8738bb,84e3a71d11d8593c127b468d75b2653af5074f81)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0a4b61d9c2e496b5f0a10e29e355a1465c8738bb,aa2a4277ad42fd8f918c6dc652473946a253f7b0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0a4b61d9c2e496b5f0a10e29e355a1465c8738bb,27600805e62f800bacf990354632eae4e487d34c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "c4ad899a33198ab6335732c769835d035e66894a"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.17.8,6.18)"}}], "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": "semver", "value": "6.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc4,*]"}}], "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": "2026-09-25T15:00:20.850913+00:00", "updated": "2026-10-01T08:00:04.584893+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}