Bug 2554842 (CVE-2026-98506) - CVE-2026-98506 kernel: mm/hugetlb: do not dissolve gigantic pages without runtime support
Summary: CVE-2026-98506 kernel: mm/hugetlb: do not dissolve gigantic pages without run...
Keywords:
Status: NEW
Alias: CVE-2026-98506
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-18 15:22 UTC by OSIDB Bzimport
Modified: 2026-10-19 11:36 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-10-18 15:22:20 UTC
In the Linux kernel, the following vulnerability has been resolved:

mm/hugetlb: do not dissolve gigantic pages without runtime support

dissolve_free_hugetlb_folio() doesn't check
hstate_is_gigantic_no_runtime(h) though remove_hugetlb_folio()/
update_and_free_hugetlb_folio() silently bail for such folios, so it frees
a still-listed folio and, on vmemmap restore failure, the
add_hugetlb_folio() rollback corrupts the free list.


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