CVE-2026-80871 crypto: xilinx-trng - Remove crypto_rng interface
A race condition in the Xilinx TRNG kernel driver allows concurrent access issues, potentially leading to incorrect random number generation or system instability.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-80871?
CVE-2026-80871 is a vulnerability in Linux, published on 4 Sep 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: xilinx-trng - Remove crypto_rng interface
Implementing the crypto_rng interface has no purpose, as it isn't used in practice. It's being removed from other drivers too. Just remove it. This leaves hwrng, which is actually used.
Tagging with 'Cc stable' due to the bugs that this removes:
- xtrng_trng_generate() sometimes returned success even when it didn't fill in all the bytes.
- It was possible for xtrng_trng_generate() and xtrng_hwrng_trng_read() to run concurrently and interfere with each other, as the locking code in xtrng_hwrng_trng_read() was broken.
Which versions are affected by CVE-2026-80871?
How do I fix CVE-2026-80871?
Apply the vendor's patch.
Is CVE-2026-80871 being exploited?
There is no known exploitation of CVE-2026-80871 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-80871, DEBIAN-CVE-2026-80871, GHSA-qx96-qjpp-7jj8, UBUNTU-CVE-2026-80871.