{"id":"CVE-2026-97946","title":"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","summary":"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 r…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 0a4b61d9c2e496b5f0a10e29e355a1465c8738bb < 84e3a71d11d8593c127b468d75b2653af5074f81","Linux >= 0a4b61d9c2e496b5f0a10e29e355a1465c8738bb < aa2a4277ad42fd8f918c6dc652473946a253f7b0","Linux >= 0a4b61d9c2e496b5f0a10e29e355a1465c8738bb < 27600805e62f800bacf990354632eae4e487d34c","Linux c4ad899a33198ab6335732c769835d035e66894a","Linux >= 6.17.8 < 6.18","Linux 6.18"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:22.110","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97946","references":[{"url":"https://git.kernel.org/stable/c/27600805e62f800bacf990354632eae4e487d34c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/84e3a71d11d8593c127b468d75b2653af5074f81","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aa2a4277ad42fd8f918c6dc652473946a253f7b0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T11:06:38.880Z","slug":"CVE-2026-97946","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}