# CVE-2026-23068: spi: spi-sprd-adi: Fix double free in probe error path

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-02-04 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.17

## Description

In the Linux kernel, the following vulnerability has been resolved: spi: spi-sprd-adi: Fix double free in probe error path The driver currently uses spi_alloc_host() to allocate the controller but registers it using devm_spi_register_controller(). If devm_register_restart_handler() fails, the code jumps to the put_ctlr label and calls spi_controller_put(). However, since the controller was registered via a devm function, the device core will automatically call spi_controller_put() again when the probe fails. This results in a double-free of the spi_controller structure. Fix this by switching to devm_spi_alloc_host() and removing the manual spi_controller_put() call.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
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  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23068

## 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/bddd3d10d039729b81cfb0804520c8832a701a0e
- https://git.kernel.org/stable/c/417cdfd9b9f986e95bfcb1d68eb443e6e0a15f8c
- https://git.kernel.org/stable/c/346775f2b4cf839177e8e86b94aa180a06dc15b0
- https://git.kernel.org/stable/c/f6d6b3f172df118db582fe5ec43ae223a55d99cf
- https://git.kernel.org/stable/c/383d4f5cffcc8df930d95b06518a9d25a6d74aac

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