Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: initialize gigantic bootmem hugepage struct pages earlier Gigantic bootmem HugeTLB pages are currently initialized from hugetlb_init(), but page_alloc_init_late() runs earlier and walks pageblocks to determine zone contiguity. If a bootmem HugeTLB region is marked noinit, set_zone_contiguous() can observe still-uninitialized struct pages through __pageblock_pfn_to_page(). This may not trigger an immediate failure, but it can make set_zone_contiguous() compute the wrong zone contiguity state. If extra poisoned-page checks are added in this path, such as PF_POISONED_CHECK() in page_zone_id(), it can also trigger an early boot panic. Initialize gigantic bootmem HugeTLB struct pages from page_alloc_init_late(), before zone contiguity is evaluated, so later page allocator setup only sees valid struct page state. This also makes the initialization order more natural, as struct pages should be initialized before later code inspects them.
References
- https://git.kernel.org/stable/c/09505232eced5f1c42902d8f28740f070c3fc6dc
- https://git.kernel.org/stable/c/29968bc7aefb3cf1e72aa7c5f52697a6b0527094
- https://git.kernel.org/stable/c/b1b7c045e808c761b1cc8c19b3040fadedda3fef
FAQ
What is CVE-2026-93230?
CVE-2026-93230 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: initialize gigantic bootmem hugepage struct pages earlier Gigantic bootmem HugeTLB pages are currently initialized fro...
How severe is CVE-2026-93230?
CVSS scoring is not yet available for CVE-2026-93230. Check NVD for updates.
Is there a patch for CVE-2026-93230?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.