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Copyright ยฉ 2026 HOL DAO LLC. All rights reserved.

Back to active CVEs
Unknown severity ยท Source severity not reportedCVE-2026-93172

mm/mm_init: handle alloc_percpu failure in free_area_init_core_hotplugCVE-2026-93172

Answer in brief

CVE-2026-93172 records a Unknown severity vulnerability in mm/mm_init: handle alloc_percpu failure in free_area_init_core_hotplug. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Oct 30, 2026Source checked Nov 2, 2026First seen by HOL Sep 17, 2026Material review Oct 30, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 2, 2026
References
6 linked sources
Open source record

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=75ef7184053989118d3814c558a9af62e7376a58 <4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc || >=75ef7184053989118d3814c558a9af62e7376a58 <bc3b5e6519b8df22d622a03eab6772784da97db4 || >=75ef7184053989118d3814c558a9af62e7376a58 <1017fe1c7f48e511c5a680e3057005daaff2f3a2 || >=75ef7184053989118d3814c558a9af62e7376a58 <2ebce860bdd7ae5e13002811bc9bbbf33fcfc2214cc5caef9a8d1894dfa31d84a0daa0ac1437dadc, bc3b5e6519b8df22d622a03eab6772784da97db4, 1017fe1c7f48e511c5a680e3057005daaff2f3a2, 2ebce860bdd7ae5e13002811bc9bbbf33fcfc221
Linux/Linuxgeneric4.8Not reported
Linux/Linuxgeneric>=75ef7184053989118d3814c558a9af62e7376a58 <4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c || >=75ef7184053989118d3814c558a9af62e7376a58 <4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc || >=75ef7184053989118d3814c558a9af62e7376a58 <bc3b5e6519b8df22d622a03eab6772784da97db4 || >=75ef7184053989118d3814c558a9af62e7376a58 <1017fe1c7f48e511c5a680e3057005daaff2f3a2 || >=75ef7184053989118d3814c558a9af62e7376a58 <2ebce860bdd7ae5e13002811bc9bbbf33fcfc2214dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c, 4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc, bc3b5e6519b8df22d622a03eab6772784da97db4, 1017fe1c7f48e511c5a680e3057005daaff2f3a2, 2ebce860bdd7ae5e13002811bc9bbbf33fcfc221
Linux/Linuxgeneric>=75ef7184053989118d3814c558a9af62e7376a58 <eb872b92e26c2576742d541e45f28b50af059b8b || >=75ef7184053989118d3814c558a9af62e7376a58 <4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c || >=75ef7184053989118d3814c558a9af62e7376a58 <4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc || >=75ef7184053989118d3814c558a9af62e7376a58 <bc3b5e6519b8df22d622a03eab6772784da97db4 || >=75ef7184053989118d3814c558a9af62e7376a58 <1017fe1c7f48e511c5a680e3057005daaff2f3a2 || >=75ef7184053989118d3814c558a9af62e7376a58 <2ebce860bdd7ae5e13002811bc9bbbf33fcfc221eb872b92e26c2576742d541e45f28b50af059b8b, 4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c, 4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc, bc3b5e6519b8df22d622a03eab6772784da97db4, 1017fe1c7f48e511c5a680e3057005daaff2f3a2, 2ebce860bdd7ae5e13002811bc9bbbf33fcfc221

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 4cc5caef9a8d1894dfa31d84a0daa0ac1437dadc; Linux/Linux to 4dda09e7ca0bf0c3fa7c5c8f134d9804b67f455c; Linux/Linux to eb872b92e26c2576742d541e45f28b50af059b8b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 17, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 17, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: mm/mm_init: handle alloc_percpu failure in free_area_init_core_hotplug We miss a failed allocation check for pgdat->per_cpu_nodestats, which results in a NULL deref when we offset into the per-cpu area. Propagate -ENOMEM up the stack and leave per_cpu_nodestats pointing at boot_nodestats so a later online can retry the allocation. hotadd_init_pgdat() returns NULL on failure, which __try_online_node() already maps to -ENOMEM. On failure nothing needs to be unwound: - the node is never marked online - per_cpu_nodestats is left pointing at boot_nodestats - __add_memory_resource() cleans up pending memblock resources - later online attempts retry the per_cpu_nodestats allocation

Quoted source text, attributed separately from HOL analysis.