CVE-2024-49964

Huge-page exhaustion via retained folio reference

Published Oct 21, 2024 · Updated May 11, 2026

Resource leak in Linux 6.11 through 6.11.2 allows local users to exhaust free huge pages through memfd-backed page pinning. In mm/gup.c, memfd_pin_folios retains an extra reference from folio_try_get for an unfaulted folio allocated by memfd_alloc_folio, so unpin_folios cannot return the page to the free huge-page pool. A low-privileged local user must exercise huge-page memfd pinning; repeated operations deplete the pool and can interrupt memory-dependent workloads without affecting confidentiality or integrity.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Resource leak in Linux 6.11 through 6.11.2 allows local users to exhaust free huge pages through memfd-backed page pinning. In mm/gup.c, memfd_pin_folios retains an extra reference from folio_try_get for an unfaulted folio allocated by memfd_alloc_folio, so unpin_folios cannot return the page to the free huge-page pool. A low-privileged local user must exercise huge-page memfd pinning; repeated operations deplete the pool and can interrupt memory-dependent workloads without affecting confidentiality or integrity.

The record

CVE
CVE-2024-49964
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.11
  2. Affected versionversion=89c1905d9c140372b7f50ef48f42378cf85d9bc5 <59e081ff2e91bbf19b8c1ecb75b031f778858383
  3. Affected versionversion=89c1905d9c140372b7f50ef48f42378cf85d9bc5 <c56b6f3d801d7ec8965993342bdd9e2972b6cb8e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.11; version=89c1905d9c140372b7f50ef48f42378cf85d9bc5 <59e081ff2e91bbf19b8c1ecb75b031f778858383; version=89c1905d9c140372b7f50ef48f42378cf85d9bc5 <c56b6f3d801d7ec8965993342bdd9e2972b6cb8e

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo