CVE-2026-80871

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8979744aca8096ee5072798dfc1181606919b35d < 83f29da85dc9d9a32fe62cd1055e8e6705e6bf80affected
LinuxLinux8979744aca8096ee5072798dfc1181606919b35d < 9634db561e1594c151923f4950c012161c545c93affected
LinuxLinux8979744aca8096ee5072798dfc1181606919b35d < 32b4d29280ed2a991dc196d5845b892acedc63b8affected
LinuxLinux6.18affected
LinuxLinux0 < 6.18unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References