CVE-2026-93172

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93172", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.090Z", "datePublished": "2026-09-17T16:12:02.544Z", "dateUpdated": "2026-10-30T12:36:13.116Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:36:13.116Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mm_init: handle alloc_percpu failure in free_area_init_core_hotplug\n\nWe miss a failed allocation check for pgdat->per_cpu_nodestats, which\nresults in a NULL deref when we offset into the per-cpu area.\n\nPropagate -ENOMEM up the stack and leave per_cpu_nodestats pointing\nat boot_nodestats so a later online can retry the allocation.\n\nhotadd_init_pgdat() returns NULL on failure, which __try_online_node()\nalready maps to -ENOMEM.\n\nOn failure nothing needs to be unwound:\n - the node is never marked online\n - per_cpu_nodestats is left pointing at boot_nodestats\n - __add_memory_resource() cleans up pending memblock resources\n - later online attempts retry the per_cpu_nodestats allocation"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/memory_hotplug.h", "mm/memory_hotplug.c", "mm/mm_init.c"], "versions": [{"version": "75ef7184053989118d3814c558a9af62e7376a58", "lessThan": "eb872b92e26c2576742d541e45f28b50af059b8b", "status": "affected", "versionType": "git"}, {"version": "75ef7184053989118d3814c558a9af62e7376a58", "lessThan": "4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c", "status": "affected", "versionType": "git"}, {"version": "75ef7184053989118d3814c558a9af62e7376a58", "lessThan": "4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc", "status": "affected", "versionType": "git"}, {"version": "75ef7184053989118d3814c558a9af62e7376a58", "lessThan": "bc3b5e6519b8df22d622a03eab6772784da97db4", "status": "affected", "versionType": "git"}, {"version": "75ef7184053989118d3814c558a9af62e7376a58", "lessThan": "1017fe1c7f48e511c5a680e3057005daaff2f3a2", "status": "affected", "versionType": "git"}, {"version": "75ef7184053989118d3814c558a9af62e7376a58", "lessThan": "2ebce860bdd7ae5e13002811bc9bbbf33fcfc221", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/memory_hotplug.h", "mm/memory_hotplug.c", "mm/mm_init.c"], "versions": [{"version": "4.8", "status": "affected"}, {"version": "0", "lessThan": "4.8", "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": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "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": "4.8", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/eb872b92e26c2576742d541e45f28b50af059b8b"}, {"url": "https://git.kernel.org/stable/c/4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c"}, {"url": "https://git.kernel.org/stable/c/4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc"}, {"url": "https://git.kernel.org/stable/c/bc3b5e6519b8df22d622a03eab6772784da97db4"}, {"url": "https://git.kernel.org/stable/c/1017fe1c7f48e511c5a680e3057005daaff2f3a2"}, {"url": "https://git.kernel.org/stable/c/2ebce860bdd7ae5e13002811bc9bbbf33fcfc221"}], "title": "mm/mm_init: handle alloc_percpu failure in free_area_init_core_hotplug", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["include/linux/memory_hotplug.h", "mm/memory_hotplug.c", "mm/mm_init.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "eb872b92e26c2576742d541e45f28b50af059b8b", "status": "affected", "version": "75ef7184053989118d3814c558a9af62e7376a58", "versionType": "git"}, {"lessThan": "4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c", "status": "affected", "version": "75ef7184053989118d3814c558a9af62e7376a58", "versionType": "git"}, {"lessThan": "4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc", "status": "affected", "version": "75ef7184053989118d3814c558a9af62e7376a58", "versionType": "git"}, {"lessThan": "bc3b5e6519b8df22d622a03eab6772784da97db4", "status": "affected", "version": "75ef7184053989118d3814c558a9af62e7376a58", "versionType": "git"}, {"lessThan": "1017fe1c7f48e511c5a680e3057005daaff2f3a2", "status": "affected", "version": "75ef7184053989118d3814c558a9af62e7376a58", "versionType": "git"}, {"lessThan": "2ebce860bdd7ae5e13002811bc9bbbf33fcfc221", "status": "affected", "version": "75ef7184053989118d3814c558a9af62e7376a58", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["include/linux/memory_hotplug.h", "mm/memory_hotplug.c", "mm/mm_init.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.8"}, {"lessThan": "4.8", "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": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "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\nmm/mm_init: handle alloc_percpu failure in free_area_init_core_hotplug\n\nWe miss a failed allocation check for pgdat->per_cpu_nodestats, which\nresults in a NULL deref when we offset into the per-cpu area.\n\nPropagate -ENOMEM up the stack and leave per_cpu_nodestats pointing\nat boot_nodestats so a later online can retry the allocation.\n\nhotadd_init_pgdat() returns NULL on failure, which __try_online_node()\nalready maps to -ENOMEM.\n\nOn failure nothing needs to be unwound:\n - the node is never marked online\n - per_cpu_nodestats is left pointing at boot_nodestats\n - __add_memory_resource() cleans up pending memblock resources\n - later online attempts retry the per_cpu_nodestats allocation"}], "id": "CVE-2026-93172", "lastModified": "2026-10-30T13:20:58.897", "metrics": {}, "published": "2026-09-17T17:18:12.943", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1017fe1c7f48e511c5a680e3057005daaff2f3a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2ebce860bdd7ae5e13002811bc9bbbf33fcfc221"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bc3b5e6519b8df22d622a03eab6772784da97db4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb872b92e26c2576742d541e45f28b50af059b8b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[75ef7184053989118d3814c558a9af62e7376a58,4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[75ef7184053989118d3814c558a9af62e7376a58,bc3b5e6519b8df22d622a03eab6772784da97db4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[75ef7184053989118d3814c558a9af62e7376a58,1017fe1c7f48e511c5a680e3057005daaff2f3a2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[75ef7184053989118d3814c558a9af62e7376a58,2ebce860bdd7ae5e13002811bc9bbbf33fcfc221)"}}], "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": "4.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "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": "2026-09-19T09:15:14.412606+00:00", "updated": "2026-09-19T18:00:13.339728+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476"]}