CVE-2026-46075 crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path
A use-after-free vulnerability in the Atmel SHA204A crypto driver allows attackers to potentially execute code or cause a denial of service during device removal.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-46075?
CVE-2026-46075 is a high-severity use after free vulnerability in Linux kernel, published on 27 May 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:
crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path
Unregister the hwrng to prevent new ->read() calls and flush the Atmel I2C workqueue before teardown to prevent a potential UAF if a queued callback runs while the device is being removed.
Drop the early return to ensure sysfs entries are removed and ->hwrng.priv is freed, preventing a memory leak.
Weakness: CWE-416
Which versions are affected by CVE-2026-46075?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46075?
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-2026-46075 being exploited?
There is no known exploitation of CVE-2026-46075 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-88647, BELL-CVE-2026-46075, DEBIAN-CVE-2026-46075, GHSA-66q3-24gv-6744, ROOT-OS-DEBIAN-11-CVE-2026-46075, ROOT-OS-DEBIAN-12-CVE-2026-46075 and 3 more.