CVE-2026-80834

Summary

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

crypto: sun8i-ce - 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-ce support which is one of the only remaining ones.

Note that the sun8i-ce support for hwrng remains in place. That is the interface that actually matters.

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. There's no point in fixing this separately only to remove the code anyway, so this commit is marked with Fixes and Cc stable.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5eb7e946888493959b1c393144934afcbcd0cfc1 < 19588f78db582ba4c47b4001bb27f39bb19dc432affected
LinuxLinux5eb7e946888493959b1c393144934afcbcd0cfc1 < ce641e75e0fc912acd4bf661367617561bc7c63faffected
LinuxLinux5eb7e946888493959b1c393144934afcbcd0cfc1 < b69af40720cabd13da763575022a3d4430b02dfcaffected
LinuxLinux5eb7e946888493959b1c393144934afcbcd0cfc1 < 2c8fa2299789282db1aac566a60c2012a5ba8ea8affected
LinuxLinux5eb7e946888493959b1c393144934afcbcd0cfc1 < 7bb9e6060710eb7b59491d9826169190297adaceaffected
LinuxLinux5eb7e946888493959b1c393144934afcbcd0cfc1 < 8e4f9110aba3127024646ef7a8999dcfcc03f516affected
LinuxLinux5eb7e946888493959b1c393144934afcbcd0cfc1 < 1017f987c5f0841f00408a78f947990c9d84b346affected
LinuxLinux5eb7e946888493959b1c393144934afcbcd0cfc1 < 011556f71d094da61379ae3672692cae2795304eaffected
LinuxLinux5.10affected
LinuxLinux0 < 5.10unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.109 <= 6.12.*unaffected
LinuxLinux6.18.50 <= 6.18.*unaffected
LinuxLinux7.2.3 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References