mm/hugetlb: initialize gigantic bootmem hugepage struct pages earlier
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.
CVE-2026-93230
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93230
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "fde1c4ecf91640e5a95ec36b71ec2e8ec379ce40",
"lessThan": "326de479ab5942fb4a4aa4f20c716045434fcd6b",
"versionType": "git"
},
{
"status": "affected",
"version": "fde1c4ecf91640e5a95ec36b71ec2e8ec379ce40",
"lessThan": "09505232eced5f1c42902d8f28740f070c3fc6dc",
"versionType": "git"
},
{
"status": "affected",
"version": "fde1c4ecf91640e5a95ec36b71ec2e8ec379ce40",
"lessThan": "29968bc7aefb3cf1e72aa7c5f52697a6b0527094",
"versionType": "git"
},
{
"status": "affected",
"version": "fde1c4ecf91640e5a95ec36b71ec2e8ec379ce40",
"lessThan": "b1b7c045e808c761b1cc8c19b3040fadedda3fef",
"versionType": "git"
}
],
"programFiles": [
"include/linux/hugetlb.h",
"mm/hugetlb.c",
"mm/mm_init.c",
"mm/sparse-vmemmap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"include/linux/hugetlb.h",
"mm/hugetlb.c",
"mm/mm_init.c",
"mm/sparse-vmemmap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93230
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48737 · Revision 1
- Added to Heist Feed
- Publisher date