linux-stable.git/include/crypto/internal/drbg.h, branch linux-rolling-stable Linux kernel stable tree crypto: drbg - Fix misaligned writes in CTR_DRBG and HASH_DRBG 2026-07-18T14:55:41+00:00 Eric Biggers ebiggers@kernel.org 2026-04-20T06:33:46+00:00 d9f4acde5ae96ce806067778e63c94e5848be40a commit ddc4dedb9ba3c8eecbc8c050fffd46d1b7e75c21 upstream. drbg_cpu_to_be32() is being used to do a plain write to a byte array, which doesn't have any alignment guarantee. This can cause a misaligned write. Replace it with the correct function, put_unaligned_be32(). Fixes: 72f3e00dd67e ("crypto: drbg - replace int2byte with cpu_to_be") Cc: stable@vger.kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit ddc4dedb9ba3c8eecbc8c050fffd46d1b7e75c21 upstream.

drbg_cpu_to_be32() is being used to do a plain write to a byte array,
which doesn't have any alignment guarantee.  This can cause a misaligned
write.  Replace it with the correct function, put_unaligned_be32().

Fixes: 72f3e00dd67e ("crypto: drbg - replace int2byte with cpu_to_be")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
crypto: drbg - Export CTR DRBG DF functions 2025-10-17T08:03:57+00:00 Harsh Jain h.jain@amd.com 2025-09-15T13:30:25+00:00 6c4fed5fee42f5785e881ef2c28359724b18b80e Export drbg_ctr_df() derivative function to new module df_sp80090. Signed-off-by: Harsh Jain <h.jain@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 
Export drbg_ctr_df() derivative function to new module df_sp80090.

Signed-off-by: Harsh Jain <h.jain@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>