CVE-2026-93230
CVE CVE-2026-93230EUVD EUVD-2026-86235Published 2026-09-24T15:29:16.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.2.4; 6.7; fde1c4ecf91640e5a95ec36b71ec2e8ec379ce40 <29968bc7aefb3cf1e72aa7c5f52697a6b0527094; fde1c4ecf91640e5a95ec36b71ec2e8ec379ce40 <b1b7c045e808c761b1cc8c19b3040fadedda3fef; patch: 6.18.51; fde1c4ecf91640e5a95ec36b71ec2e8ec379ce40 <09505232eced5f1c42902d8f28740f070c3fc6dc; patch: 0; patch: 7.3-rc1
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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