{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97947", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:18:58.204Z", "datePublished": "2026-09-25T10:22:57.163Z", "dateUpdated": "2026-09-25T10:22:57.163Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-25T10:22:57.163Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/amd_node: Fix potential NULL pointer dereference\n\namd_smn_read/write() are exported functions around __amd_smn_rw(), so\nthey are always available even if amd_smn_init() fails. In that case,\n'amd_roots' is NULL and __amd_smn_rw() will access uninitialized memory.\n\nThen, commit:\n\n 83518453074d (\"x86/amd_node: Add SMN offsets to exclusive region access\")\n\nadded the 'smn_exclusive' flag, which indicated the calls to\npci_request_config_region_exclusive() succeeded, to prevent\nconcurrent userspace access.\n\nCommit:\n\n 0a4b61d9c2e4 (\"x86/amd_node: Fix AMD root device caching\")\n\nre-ordered initialization so pci_request_config_region_exclusive() is\ncalled earlier and a failure exits amd_smn_init() before allocating\n'amd_roots'. The setting of 'smn_exclusive' moved to the end of\namd_smn_init(), after 'amd_roots' is allocated. It became redundant\nand can be removed.\n\nReplace 'smn_exclusive' with directly checking 'amd_roots', to fix a\npotential NULL pointer dereference and to simplify the logic.\n\n [ bp: Reorg commit message, touchup comment. ]\n [ mingo: Rebase & further touchups. ]"}], "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": "77466b798d59d6761501ff36094cf430d3876549", "lessThan": "fcd19bc829eca237742a3b123f839ad1c473ec85", "status": "affected", "versionType": "git"}, {"version": "77466b798d59d6761501ff36094cf430d3876549", "lessThan": "a797a2331e5d2ecdbccbae222ea71c759fdb2c2b", "status": "affected", "versionType": "git"}, {"version": "77466b798d59d6761501ff36094cf430d3876549", "lessThan": "aefdbd574a362dcf7569bada6d72f64a006b9fb9", "status": "affected", "versionType": "git"}]}, {"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": "6.14", "status": "affected"}, {"version": "0", "lessThan": "6.14", "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-rc3", "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": "6.14", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.3-rc3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fcd19bc829eca237742a3b123f839ad1c473ec85"}, {"url": "https://git.kernel.org/stable/c/a797a2331e5d2ecdbccbae222ea71c759fdb2c2b"}, {"url": "https://git.kernel.org/stable/c/aefdbd574a362dcf7569bada6d72f64a006b9fb9"}], "title": "x86/amd_node: Fix potential NULL pointer dereference", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"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": "fcd19bc829eca237742a3b123f839ad1c473ec85", "status": "affected", "version": "77466b798d59d6761501ff36094cf430d3876549", "versionType": "git"}, {"lessThan": "a797a2331e5d2ecdbccbae222ea71c759fdb2c2b", "status": "affected", "version": "77466b798d59d6761501ff36094cf430d3876549", "versionType": "git"}, {"lessThan": "aefdbd574a362dcf7569bada6d72f64a006b9fb9", "status": "affected", "version": "77466b798d59d6761501ff36094cf430d3876549", "versionType": "git"}]}, {"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": "6.14"}, {"lessThan": "6.14", "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-rc3", "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 potential NULL pointer dereference\n\namd_smn_read/write() are exported functions around __amd_smn_rw(), so\nthey are always available even if amd_smn_init() fails. In that case,\n'amd_roots' is NULL and __amd_smn_rw() will access uninitialized memory.\n\nThen, commit:\n\n 83518453074d (\"x86/amd_node: Add SMN offsets to exclusive region access\")\n\nadded the 'smn_exclusive' flag, which indicated the calls to\npci_request_config_region_exclusive() succeeded, to prevent\nconcurrent userspace access.\n\nCommit:\n\n 0a4b61d9c2e4 (\"x86/amd_node: Fix AMD root device caching\")\n\nre-ordered initialization so pci_request_config_region_exclusive() is\ncalled earlier and a failure exits amd_smn_init() before allocating\n'amd_roots'. The setting of 'smn_exclusive' moved to the end of\namd_smn_init(), after 'amd_roots' is allocated. It became redundant\nand can be removed.\n\nReplace 'smn_exclusive' with directly checking 'amd_roots', to fix a\npotential NULL pointer dereference and to simplify the logic.\n\n [ bp: Reorg commit message, touchup comment. ]\n [ mingo: Rebase & further touchups. ]"}], "id": "CVE-2026-97947", "lastModified": "2026-09-25T11:17:22.213", "metrics": {}, "published": "2026-09-25T11:17:22.213", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a797a2331e5d2ecdbccbae222ea71c759fdb2c2b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aefdbd574a362dcf7569bada6d72f64a006b9fb9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fcd19bc829eca237742a3b123f839ad1c473ec85"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}