CVE-2022-49924

Local service interruption via leaked NFC buffers

Published May 1, 2025 · Updated May 11, 2026

A memory leak in the Linux kernel NFC FDP driver beginning with 4.4 allows local users to exhaust kernel memory through I2C transmissions. The fdp_nci_send() path passes an allocated socket buffer to fdp_nci_i2c_write(), which finishes without releasing it, and the caller also leaves it allocated. The path requires local low-privilege access and an active FDP NFC driver; repeated sends consume memory and can interrupt service without disclosing or modifying data.

CVSS severity5.5
Medium
EPSS probability0.18%
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 the Linux kernel NFC FDP driver beginning with 4.4 allows local users to exhaust kernel memory through I2C transmissions. The fdp_nci_send() path passes an allocated socket buffer to fdp_nci_i2c_write(), which finishes without releasing it, and the caller also leaves it allocated. The path requires local low-privilege access and an active FDP NFC driver; repeated sends consume memory and can interrupt service without disclosing or modifying data.

The record

CVE
CVE-2022-49924
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE 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=4.4
  2. Affected versionversion=a06347c04c13e380afce0c9816df51f00b83faf1 <1a7a898f8f7b56c0eaa2baf67a0c96235a30bc29
  3. Affected versionversion=a06347c04c13e380afce0c9816df51f00b83faf1 <44bc1868a4f542502ea2221fe5ad88ca66d1c6b6
  4. Affected versionversion=a06347c04c13e380afce0c9816df51f00b83faf1 <8e4aae6b8ca76afb1fb64dcb24be44ba814e7f8a
  5. Affected versionversion=a06347c04c13e380afce0c9816df51f00b83faf1 <e8c11ee2d07f7c4dfa2ac0ea8efc4f627e58ea57

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.4; version=a06347c04c13e380afce0c9816df51f00b83faf1 <1a7a898f8f7b56c0eaa2baf67a0c96235a30bc29; version=a06347c04c13e380afce0c9816df51f00b83faf1 <44bc1868a4f542502ea2221fe5ad88ca66d1c6b6; version=a06347c04c13e380afce0c9816df51f00b83faf1 <8e4aae6b8ca76afb1fb64dcb24be44ba814e7f8a; version=a06347c04c13e380afce0c9816df51f00b83faf1 <e8c11ee2d07f7c4dfa2ac0ea8efc4f627e58ea57

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.

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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-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation Flood

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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