{"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":"2026-09-17T16:12:02.544Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:12:02.544Z"},"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":"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":"6.12.110","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-rc1","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":"6.12.110"},{"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-rc1"}]}]}],"references":[{"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"}}}}