# CVE-2026-93825: Linux kernel null pointer dereference in SPI device matching

Source: https://junglewise.ai/threats/cve-2026-93825-in-the-linux-kernel-the-following-vulnerability-has-been-resolved  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-24. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-93825 · Severity: info · Published 2026-09-24

The Linux kernel's SPI (Serial Peripheral Interface) driver subsystem contains a null pointer dereference vulnerability in the device matching code. When a device uses driver override without a matching SPI ID entry, the system can crash. An attacker with local access to load malicious device drivers could trigger this crash, causing a denial of service.

Technologies: [Linux](https://junglewise.ai/threats/technologies/linux-linux). Vendors: [Linux](https://junglewise.ai/threats/vendors/linux).

## Quick answers

**Is CVE-2026-93825 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-93825 being exploited in the wild.

**How severe is CVE-2026-93825?** Informational severity, published 24 September 2026.

**Which products and versions are affected?** Linux Multiple versions across 2.6.11 through 7.2 series.

**Is there a fix for CVE-2026-93825?** A patch was published on 2026-06-16: Patch committed upstream before disclosure Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-93825 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-93825?** Check whether you run Linux at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The spi_get_device_match_data() function in drivers/spi/spi.c failed to check whether spi_get_device_id() returned NULL before dereferencing the returned pointer. This occurs when driver_override is used without a corresponding SPI ID table entry. The fix adds a NULL check before dereferencing the pointer. Local attack vector; requires ability to trigger device driver loading with crafted driver_override configuration.

## Affected products

- Linux Linux Multiple versions across 2.6.11 through 7.2 series

## Timeline

- 2026-09-24: disclosed
- 2026-06-16: patched: Patch committed upstream before disclosure
- 2026-09-21: other: Merged into stable kernel trees

## References

- [https://git.kernel.org/stable/c/3fcd9415144f4fbd21e1bef35a7f8dbd734f607d](https://git.kernel.org/stable/c/3fcd9415144f4fbd21e1bef35a7f8dbd734f607d)
- [https://git.kernel.org/stable/c/72cc9c6d6fba5b4e0aaf89126884a56bb54b92f8](https://git.kernel.org/stable/c/72cc9c6d6fba5b4e0aaf89126884a56bb54b92f8)

## Related threats

- [Linux kernel use-after-free in conntrack helper](https://junglewise.ai/threats/cve-2026-98442-in-the-linux-kernel-the-following-vulnerability-has-been-resolved)
- [Linux kernel SMB client buffer overflow in symlink handling](https://junglewise.ai/threats/cve-2026-98318-in-the-linux-kernel-the-following-vulnerability-has-been-resolved)
- [Linux kernel nvmet-rdma queue resource leak](https://junglewise.ai/threats/cve-2026-98152-in-the-linux-kernel-the-following-vulnerability-has-been-resolved)
- [Linux kernel denial of service in IPv4 routing table allocation](https://junglewise.ai/threats/cve-2026-97598-in-the-linux-kernel-the-following-vulnerability-has-been-resolved)
- [Linux kernel bcm2835 pinctrl null pointer dereference](https://junglewise.ai/threats/cve-2026-93274-in-the-linux-kernel-the-following-vulnerability-has-been-resolved)