Answer in brief
CVE-2024-35993 records a High severity (CVSS 7.8) vulnerability in mm: turn folio_test_hugetlb into a PageType. The current sources do not mark it as known exploited. The current feed maps 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.
CVSS is 7.8. 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.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=9c5ccf2db04b8d7c3df363fdd4856c2b79ab2c6a <2431b5f2650dfc47ce782d1ca7b02d6b3916976f || >=9c5ccf2db04b8d7c3df363fdd4856c2b79ab2c6a <9fdcc5b6359dfdaa52a55033bf50e2cedd66eb32 || >=9c5ccf2db04b8d7c3df363fdd4856c2b79ab2c6a <d99e3140a4d33e26066183ff727d8f02f56bec64 | 2431b5f2650dfc47ce782d1ca7b02d6b3916976f, 9fdcc5b6359dfdaa52a55033bf50e2cedd66eb32, d99e3140a4d33e26066183ff727d8f02f56bec64 |
| Linux/Linuxgeneric | 6.6 | Not reported |
Published upstream
May 20, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: mm: turn folio_test_hugetlb into a PageType The current folio_test_hugetlb() can be fooled by a concurrent folio split into returning true for a folio which has never belonged to hugetlbfs. This can't happen if the caller holds a refcount on it, but we have a few places (memory-failure, compaction, procfs) which do not and should not take a speculative reference. Since hugetlb pages do not use individual page mapcounts (they are always fully mapped and use the entire_mapcount field to record the number of mappings), the PageType field is available now that page_mapcount() ignores the value in this field. In compaction and with CONFIG_DEBUG_VM enabled, the current implementation can result in an oops, as reported by Luis. This happens since 9c5ccf2db04b ("mm: remove HUGETLB_PAGE_DTOR") effectively added some VM_BUG_ON() checks in the PageHuge() testing path. [[email protected]: update vmcoreinfo]
Quoted source text, attributed separately from HOL analysis.