CVE-2026-23068
Published: February 10, 2026Last modified: February 20, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.163-r0) |
| 25 LTS | linux-lts | Fixed (6.12.73-r0) | |
| Stream | linux-lts | Fixed (6.12.71-r0) |
References
- https://git.kernel.org/stable/c/346775f2b4cf839177e8e86b94aa180a06dc15b0
- https://git.kernel.org/stable/c/383d4f5cffcc8df930d95b06518a9d25a6d74aac
- https://git.kernel.org/stable/c/417cdfd9b9f986e95bfcb1d68eb443e6e0a15f8c
- https://git.kernel.org/stable/c/bddd3d10d039729b81cfb0804520c8832a701a0e
- https://git.kernel.org/stable/c/f6d6b3f172df118db582fe5ec43ae223a55d99cf