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CVE Record

CVE-2024-38381: nfc: nci: Fix uninit-value in nci_rx_work

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: Fix uninit-value in nci_rx_work syzbot reported the following uninit-value access issue [1] nci_rx_work() parses received packet from ndev->rx_q. It should be validated header size, payload size and total packet size before processing the packet. If an invalid packet is detected, it should be silently discarded.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-38381 is a Linux kernel NFC issue. Malformed received NFC NCI packets were not fully size-checked before processing, leading to uninitialized-value access. Public sources show kernel stable fixes and vendor advisories, but no CVSS score or confirmed exploitation.

Executive priority

Set priority after confirming NFC exposure and vendor applicability. No active exploitation is cited, but kernel flaws in maintained products should enter normal vulnerability remediation, with higher urgency for externally managed appliances or regulated industrial environments.

Technical view

The flaw is in nci_rx_work(), which parses packets from ndev->rx_q. The fix validates header size, payload size, and total packet size before processing and silently discards invalid packets. The supplied data lists affected Linux kernel versions and multiple stable backport commits.

Likely exposure

Exposure is most relevant to systems running affected Linux kernels with NFC/NCI support present. Debian LTS and Siemens advisories indicate downstream vendor impact, but the bundle does not provide enough detail to name specific Siemens products or deployment conditions.

Exploitation context

The source bundle does not show CISA KEV listing, public active exploitation, exploit code, or a complete impact rating. Treat this as a patch management issue for affected kernels, especially in embedded, workstation, or appliance environments where NFC support may exist.

Researcher notes

Evidence is limited to the CVE record, Linux stable commits, and downstream advisories. The root issue is missing packet size validation in the NFC NCI receive path. The bundle does not establish exploitability, privilege requirements, CVSS, or concrete product impact beyond Linux and referenced vendors.

Mitigation direction

  • Apply the relevant Linux stable kernel fix or vendor-supplied kernel package.
  • Follow Debian, Siemens, or device-vendor guidance for affected downstream products.
  • Prioritize systems where NFC/NCI support is enabled or present.
  • Track vendor advisories for interim mitigations if patching is delayed.

Validation and detection

  • Inventory Linux kernel versions against the affected version list.
  • Confirm whether the applicable stable commit or vendor package fix is installed.
  • Check whether NFC/NCI support is present in relevant system builds.
  • Review Debian and Siemens advisories for environment-specific applicability.
Prepared
Confidence
medium
Sources
12

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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CVE-2024-38381 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
3Timeline events
3ADP providers
12Source links

SSVC decision data

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

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

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux11387b2effbb55f58dc2111ef4b4b896f2756240, 03fe259649a551d336a7f20919b641ea100e3fff, 755e53bbc61bc1aff90eafa64c8c2464fd3dfa3c, ac68d9fa09e410fa3ed20fb721d56aa558695e16, b51ec7fc9f877ef869c01d3ea6f18f6a64e831a7, a946ebee45b09294c8b0b0e77410b763c4d2817a, d24b03535e5eb82e025219c2f632b485409c898f, d24b03535e5eb82e025219c2f632b485409c898f, 8948e30de81faee87eeee01ef42a1f6008f5a83aunaffected
LinuxLinux6.9, 0, 4.19.316, 5.4.278, 5.10.219, 5.15.161, 6.1.93, 6.6.33, 6.9.4, 6.10affected
Weakness

CWE details

No CWE listed

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