CVE-2022-49922

Kernel memory exhaustion via failed NFC sends

Published May 1, 2025 · Updated May 11, 2026

Memory leak in the Linux kernel nfcmrvl driver allows local users to consume kernel memory by triggering an NFC-over-I2C send failure. nfcmrvl_i2c_nci_send() leaves the outgoing socket buffer allocated when i2c_master_send() returns an error because its caller frees that buffer only for nonnegative returns. Exploitation requires local low-privileged access and the affected Marvell NFC I2C path; repeated failures can exhaust memory and interrupt service.

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

Memory leak in the Linux kernel nfcmrvl driver allows local users to consume kernel memory by triggering an NFC-over-I2C send failure. nfcmrvl_i2c_nci_send() leaves the outgoing socket buffer allocated when i2c_master_send() returns an error because its caller frees that buffer only for nonnegative returns. Exploitation requires local low-privileged access and the affected Marvell NFC I2C path; repeated failures can exhaust memory and interrupt service.

The record

CVE
CVE-2022-49922
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=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <52438e734c1566f5e2bcd9a065d2d65e306c0555
  3. Affected versionversion=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <5dfdac5e3f8db5f4445228c44f64091045644a3b
  4. Affected versionversion=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <825656ae61e73ddc05f585e6258d284c87064b10
  5. Affected versionversion=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <92a1df9c6da20c02cf9872f8b025a66ddb307aeb
  6. Affected versionversion=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <93d904a734a74c54d945a9884b4962977f1176cd
  7. Affected versionversion=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <c8e7d4a1166f063703955f1b2e765a6db5bf1771
  8. Affected versionversion=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <dd0ee55ead91fbb16889dbe7ff0b0f7c9e4e849d
  9. Affected versionversion=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <f30060efcf18883748a0541aa41acef183cd9c0e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.4; version=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <52438e734c1566f5e2bcd9a065d2d65e306c0555; version=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <5dfdac5e3f8db5f4445228c44f64091045644a3b; version=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <825656ae61e73ddc05f585e6258d284c87064b10; version=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <92a1df9c6da20c02cf9872f8b025a66ddb307aeb; version=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <93d904a734a74c54d945a9884b4962977f1176cd; version=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <c8e7d4a1166f063703955f1b2e765a6db5bf1771; version=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <dd0ee55ead91fbb16889dbe7ff0b0f7c9e4e849d; version=b5b3e23e4cace008e1a30e8614a484d14dfd07a1 <f30060efcf18883748a0541aa41acef183cd9c0e

Published CVSS scores

5.5UbuntuCVSS: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

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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