CVE-2024-47719

Local kernel memory corruption via IOVA alignment overflow

Published Oct 21, 2024 · Updated May 11, 2026

Integer overflow in Linux kernel iommufd allows local users to corrupt the selected IOVA allocation range through crafted mapping inputs. The iopt_alloc_area_pages path derives an excessive alignment from attacker-controlled IOVA and user-pointer values, then ALIGN wraps and corrupts the area's allocation boundaries. The user must reach the local iommufd ioctl interface; a successful trigger can compromise kernel confidentiality, integrity, and availability.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Linux kernel iommufd allows local users to corrupt the selected IOVA allocation range through crafted mapping inputs. The iopt_alloc_area_pages path derives an excessive alignment from attacker-controlled IOVA and user-pointer values, then ALIGN wraps and corrupts the area's allocation boundaries. The user must reach the local iommufd ioctl interface; a successful trigger can compromise kernel confidentiality, integrity, and availability.

The record

CVE
CVE-2024-47719
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
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

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Is a vulnerable build present?

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  1. Affected versionversion=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <72b78287ce92802e8ba678181a34b84ae844a112
  2. Affected versionversion=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <8f6887349b2f829a4121c518aeb064fc922714e4
  3. Affected versionversion=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <a6e9f9fd14772c0b23c6d1d7002d98f9d27cb1f6
  4. Affected versionversion=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <cd6dd564ae7d99967ef50078216929418160b30e
  5. Affected versionversion=6.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <72b78287ce92802e8ba678181a34b84ae844a112; version=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <8f6887349b2f829a4121c518aeb064fc922714e4; version=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <a6e9f9fd14772c0b23c6d1d7002d98f9d27cb1f6; version=51fe6141f0f64ae0bbc096a41a07572273e8c0ef <cd6dd564ae7d99967ef50078216929418160b30e; version=6.2

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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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

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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