boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2024-39477MEDIUM
Linux Linux — mm/hugetlb: do not call vma_add_reservation upon ENOMEM
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0019    8.9     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    df7a6d1f64056aec572162c5d35ed9ff86ece6f3 –  —
  Linux    6.9 –                                       6.9.5
TIMELINE
  Jun 25  Reserved by Linux
  Jul 5   Published (CNA: Linux)
  Aug 4   RESCORED — CVE-2024-39477 (Linux). CVSS 7.8 → 5.5 (NVD).
CWE-770 · CNA: Linux · CVSS v3.1 · 2 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: do not call vma_add_reservation upon ENOMEM sysbot reported a splat [1] on __unmap_hugepage_range(). This is because vma_needs_reservation() can return -ENOMEM if allocate_file_region_entries() fails to allocate the file_region struct for the reservation. Check for that and do not call vma_add_reservation() if that is the case, otherwise region_abort() and region_del() will see that we do not have any file_regions. If we detect that vma_needs_reservation() returned -ENOMEM, we clear the hugetlb_restore_reserve flag as if this reservation was still consumed, so free_huge_folio() will not increment the resv count. [1] https://lore.kernel.org/linux-mm/0000000000004096100617c58d54@google.com/T/#ma5983bc1ab18a54910da83416b3f89f3c7ee43aa

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
June 25, 2024ReservedReserved by Linux
July 5, 2024PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2024-39477 (Linux). CVSS 7.8 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinuxdf7a6d1f64056aec572162c5d35ed9ff86ece6f3
LinuxLinux6.96.9.5

Weaknesses

CWE-770

References (2)

Related

Authoritative record: CVE-2024-39477 at cve.org

Vendors: linux

Weaknesses: CWE-770

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-39477 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.