CVE-2026-74415 spi: atcspi200: fix use-after-free when driver unbind
A use-after-free in the atcspi200 SPI driver allows local attackers with high privileges to execute code or escalate privileges during driver unbind.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-74415?
CVE-2026-74415 is an use after free vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
spi: atcspi200: fix use-after-free when driver unbind
DMA resource is initialized after SPI controller registration. So when driver unbind, this can trigger a use-after-free when DMA is torn down while the controller is still alive and triggers DMA transfers.
Which versions are affected by CVE-2026-74415?
How do I fix CVE-2026-74415?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-74415 being exploited?
There is no known exploitation of CVE-2026-74415 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-74415, GHSA-wwmp-gq7p-m4r3, UBUNTU-CVE-2026-74415.