CVE-2026-80833

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

crypto: sun8i-ss - Remove crypto_rng interface

Since the crypto_rng interface for hardware PRNGs is unused and is

redundant with hwrng and the actual Linux RNG, it's being phased out.

Most drivers for it were already removed. Go ahead and remove the

sun8i-ss support which is one of the only remaining ones.

As usual for crypto_rng, this driver was also buggy: its ->generate()

function had a use-after-free vulnerability due to using

wait_for_completion_interruptible_timeout() without handling shutting

down the DMA operation if a signal is sent. Also, it had a buffer

overread bug in the line 'memcpy(ctx->seed, d + dlen, ctx->slen);'.

There's no point in fixing these bugs separately only to remove the code

anyway, so this commit is marked with Fixes and Cc stable.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References