CVE-2024-56710

Local resource exhaustion via leaked pinned pages

Published Dec 29, 2024 · Updated May 11, 2026

A memory leak in Linux kernel 6.6 CephFS direct I/O allows local users to consume kernel memory through sparse extent-map allocation failures. The ceph_direct_read_write() path allocates a bvecs array and pins its pages before ceph_alloc_sparse_ext_map(), then releases neither resource if that later allocation fails. Reachability requires local access to CephFS direct I/O and the failing path; repeated failures consume kernel memory and interrupt service.

CVSS severity3.3
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A memory leak in Linux kernel 6.6 CephFS direct I/O allows local users to consume kernel memory through sparse extent-map allocation failures. The ceph_direct_read_write() path allocates a bvecs array and pins its pages before ceph_alloc_sparse_ext_map(), then releases neither resource if that later allocation fails. Reachability requires local access to CephFS direct I/O and the failing path; repeated failures consume kernel memory and interrupt service.

The record

CVE
CVE-2024-56710
Published
Dec 29, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 29, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=03bc06c7b0bd8d86b9f17f459acaeb1283ba2700 <44e518abbb498075ae85c7d1d1a503a6bb05ea2d
  2. Affected versionversion=03bc06c7b0bd8d86b9f17f459acaeb1283ba2700 <66e0c4f91461d17d48071695271c824620bed4ef
  3. Affected versionversion=03bc06c7b0bd8d86b9f17f459acaeb1283ba2700 <eb9041837123f31d5897e99bb761f46cb4ce5859
  4. Affected versionversion=6.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=03bc06c7b0bd8d86b9f17f459acaeb1283ba2700 <44e518abbb498075ae85c7d1d1a503a6bb05ea2d; version=03bc06c7b0bd8d86b9f17f459acaeb1283ba2700 <66e0c4f91461d17d48071695271c824620bed4ef; version=03bc06c7b0bd8d86b9f17f459acaeb1283ba2700 <eb9041837123f31d5897e99bb761f46cb4ce5859; version=6.6

Published CVSS scores

3.3CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
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

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Your stack

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