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-2024-47674MEDIUM
Linux Linux — mm: avoid leaving partial pfn mappings around in error case
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0025   16.1     —
AFFECTED
  Product  Versions                                    Fixed
  Linux    b97a50adb37e98b940a30c4656565ff609aa8f94 –  —
  Linux    5.13 –                                      5.15.168
TIMELINE
  Sep 30  Reserved by Linux
  Oct 15  Published (CNA: Linux)
  Aug 4   RESCORED — CVE-2024-47674 (Linux). CVSS 7.8 → 5.5 (NVD).
CWE-459 · CNA: Linux · CVSS v3.1 · 10 references · NVD status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: mm: avoid leaving partial pfn mappings around in error case As Jann points out, PFN mappings are special, because unlike normal memory mappings, there is no lifetime information associated with the mapping - it is just a raw mapping of PFNs with no reference counting of a 'struct page'. That's all very much intentional, but it does mean that it's easy to mess up the cleanup in case of errors. Yes, a failed mmap() will always eventually clean up any partial mappings, but without any explicit lifetime in the page table mapping itself, it's very easy to do the error handling in the wrong order. In particular, it's easy to mistakenly free the physical backing store before the page tables are actually cleaned up and (temporarily) have stale dangling PTE entries. To make this situation less error-prone, just make sure that any partial pfn mapping is torn down early, before any other error handling.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
September 30, 2024ReservedReserved by Linux
October 15, 2024PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2024-47674 (Linux). CVSS 7.8 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinuxb97a50adb37e98b940a30c4656565ff609aa8f94
LinuxLinux5.135.15.168

Weaknesses

CWE-459

References (10)

Related

Authoritative record: CVE-2024-47674 at cve.org

Vendors: linux

Weaknesses: CWE-459

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-47674 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.