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CVE Record

CVE-2024-35915: nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet syzbot reported the following uninit-value access issue [1][2]: nci_rx_work() parses and processes received packet. When the payload length is zero, each message type handler reads uninitialized payload and KMSAN detects this issue. The receipt of a packet with a zero-size payload is considered unexpected, and therefore, such packets should be silently discarded. This patch resolved this issue by checking payload size before calling each message type handler codes.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-35915 is a Linux kernel NFC/NCI bug where malformed zero-length NFC controller packets could make the kernel read uninitialized memory. Public sources describe a kernel fix, but do not provide a CVSS score, confirmed exploitation, or detailed business impact.

Executive priority

Handle through normal kernel patch governance, with higher priority for NFC-enabled endpoints and embedded devices. No source confirms active exploitation or critical severity, so this is not supported as an emergency based on the supplied evidence.

Technical view

In nci_rx_work(), zero-size payloads reached NCI message handlers that expected payload data, causing uninitialized-value reads detected by KMSAN. The upstream fix checks payload size before dispatching handlers and silently discards unexpected zero-payload packets.

Likely exposure

Exposure is most relevant to Linux systems with the NFC/NCI subsystem present and reachable through NFC controller traffic. The CVE record lists multiple Linux kernel versions and stable commits, but the supplied data does not map every distribution package or configuration state.

Exploitation context

The source bundle reports syzbot discovery and KMSAN detection. It does not cite active exploitation, public weaponization, KEV listing, or a practical attack chain. Treat exploitation status as unconfirmed.

Researcher notes

The relevant condition is receipt of an unexpected zero-size NCI payload before handler dispatch. The fix is defensive validation, not a broad NFC redesign. Public evidence is limited to kernel commits, CVE metadata, syzbot/KMSAN context, and Debian advisories.

Mitigation direction

  • Apply kernel or distribution updates containing the referenced stable fixes.
  • Review Debian LTS and vendor advisories for package-specific remediation.
  • Prioritize systems where NFC/NCI support is enabled or required.
  • Check embedded and appliance vendors for their fixed firmware guidance.

Validation and detection

  • Inventory Linux kernel versions across servers, workstations, and appliances.
  • Confirm whether NFC/NCI support is built, loaded, or exposed.
  • Verify installed kernels include the applicable stable fix commit or vendor backport.
  • Track Debian or vendor advisory status for each affected platform.
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-2024-35915 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

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux6a2968aaf50c7a22fced77a5e24aa636281efca8, 6a2968aaf50c7a22fced77a5e24aa636281efca8, 6a2968aaf50c7a22fced77a5e24aa636281efca8, 6a2968aaf50c7a22fced77a5e24aa636281efca8, 6a2968aaf50c7a22fced77a5e24aa636281efca8, 6a2968aaf50c7a22fced77a5e24aa636281efca8, 6a2968aaf50c7a22fced77a5e24aa636281efca8, 6a2968aaf50c7a22fced77a5e24aa636281efca8unaffected
LinuxLinux3.2, 0, 4.19.312, 5.4.274, 5.10.215, 5.15.154, 6.1.85, 6.6.26, 6.8.5, 6.9affected
Weakness

CWE details

No CWE listed

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