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CVE Record

CVE-2022-49923: nfc: nxp-nci: Fix potential memory leak in nxp_nci_send()

In the Linux kernel, the following vulnerability has been resolved: nfc: nxp-nci: Fix potential memory leak in nxp_nci_send() nxp_nci_send() will call nxp_nci_i2c_write(), and only free skb when nxp_nci_i2c_write() failed. However, even if the nxp_nci_i2c_write() run succeeds, the skb will not be freed in nxp_nci_i2c_write(). As the result, the skb will memleak. nxp_nci_send() should also free the skb when nxp_nci_i2c_write() succeeds.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-49923 is a Linux kernel memory leak in the NXP NCI NFC driver path. A local, low-privileged user could potentially trigger memory consumption that affects system availability. It is not described as data theft or privilege escalation.

Executive priority

Treat as a moderate availability risk. Prioritize patching on endpoints, embedded Linux, or devices with NFC capability. It is lower urgency than remotely exploitable kernel flaws, but unresolved memory leaks can still disrupt business operations on exposed systems.

Technical view

In nxp_nci_send(), an skb is freed only when nxp_nci_i2c_write() fails. On successful write, the skb is not freed, causing a CWE-401 memory leak. The CVSS vector is local, low complexity, low privileges, no user interaction, with high availability impact.

Likely exposure

Exposure is most relevant to Linux systems using affected kernel versions with the NXP NCI NFC driver path present or enabled. General-purpose servers without this NFC hardware or driver are less likely to be affected, but kernel package status should still be verified.

Exploitation context

The source bundle does not report active exploitation, and KEV status is false. Exploitation is characterized by CVSS as local and requiring low privileges. The documented impact is availability through memory exhaustion, not confidentiality or integrity compromise.

Researcher notes

Version data in the provided record is not fully self-explanatory, so use upstream stable commits and distro advisories for exact affected/fixed ranges. The fix is a memory-management correction in the NFC nxp-nci send path.

Mitigation direction

  • Apply a Linux kernel update containing the referenced stable fixes.
  • Use distribution vendor kernel advisories to identify fixed package versions.
  • Prioritize systems with NFC hardware or NXP NCI driver support enabled.
  • If patching is delayed, review vendor guidance for safe driver-level mitigations.

Validation and detection

  • Inventory running Linux kernel versions across affected assets.
  • Check whether NXP NCI NFC driver support is present or loaded.
  • Compare installed kernels against vendor advisories and referenced stable commits.
  • Confirm updated kernels are booted, not merely installed.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-401: Exact CWE lookup

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cve · low confidence lookup

CVE-2022-49923 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
1ADP providers
5Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2022-49923Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxdece45855a8b0d1dcf48eb01d0822070ded6a4c8, dece45855a8b0d1dcf48eb01d0822070ded6a4c8, dece45855a8b0d1dcf48eb01d0822070ded6a4c8, dece45855a8b0d1dcf48eb01d0822070ded6a4c8unaffected
LinuxLinux4.1, 0, 5.10.154, 5.15.78, 6.0.8, 6.1affected
Weakness

CWE details

CWE-401

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.