{"id":"CVE-2026-93172","aliases":[],"cve":{"records":[{"id":"CVE-2026-93172","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-17T16:02:15.090Z","published":"2026-09-17T16:12:02.544Z","modified":"2026-10-30T12:36:13.116Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:36:13.116Z"}],"references":[{"url":"https://git.kernel.org/stable/c/eb872b92e26c2576742d541e45f28b50af059b8b","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/bc3b5e6519b8df22d622a03eab6772784da97db4","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/1017fe1c7f48e511c5a680e3057005daaff2f3a2","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/2ebce860bdd7ae5e13002811bc9bbbf33fcfc221","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"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"}]}]}]}],"prioritization":[]},"title":"mm/mm_init: handle alloc_percpu failure in free_area_init_core_hotplug","titleSource":"Linux","descriptionSource":"Linux","description":"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","score":null,"severity":"unknown","published":"2026-09-17T16:12:02.544Z","modified":"2026-10-30T12:36:13.116Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"75ef7184053989118d3814c558a9af62e7376a58","status":"affected","lessThan":"eb872b92e26c2576742d541e45f28b50af059b8b","versionType":"git"},{"version":"75ef7184053989118d3814c558a9af62e7376a58","status":"affected","lessThan":"4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c","versionType":"git"},{"version":"75ef7184053989118d3814c558a9af62e7376a58","status":"affected","lessThan":"4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc","versionType":"git"},{"version":"75ef7184053989118d3814c558a9af62e7376a58","status":"affected","lessThan":"bc3b5e6519b8df22d622a03eab6772784da97db4","versionType":"git"},{"version":"75ef7184053989118d3814c558a9af62e7376a58","status":"affected","lessThan":"1017fe1c7f48e511c5a680e3057005daaff2f3a2","versionType":"git"},{"version":"75ef7184053989118d3814c558a9af62e7376a58","status":"affected","lessThan":"2ebce860bdd7ae5e13002811bc9bbbf33fcfc221","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-93172"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"4.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.8","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-93172"}],"remediation":[],"references":["https://git.kernel.org/stable/c/eb872b92e26c2576742d541e45f28b50af059b8b","https://git.kernel.org/stable/c/4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c","https://git.kernel.org/stable/c/4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc","https://git.kernel.org/stable/c/bc3b5e6519b8df22d622a03eab6772784da97db4","https://git.kernel.org/stable/c/1017fe1c7f48e511c5a680e3057005daaff2f3a2","https://git.kernel.org/stable/c/2ebce860bdd7ae5e13002811bc9bbbf33fcfc221"],"sources":[{"name":"CVE","id":"CVE-2026-93172","modified":"2026-10-30T12:36:13.116Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93172"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-30T13:55:19.191Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T02:25:31.038Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}