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crypto: drbg - Fix the fips_enabled priority boost

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When fips_enabled=1, it seems to have been intended for one of the
algorithms defined in crypto/drbg.c to be the highest priority "stdrng"
algorithm, so that it is what is used by "stdrng" users.

However, the code only boosts the priority to 400, which is less than
the priority 500 used in drivers/crypto/caam/caamprng.c.  Thus, the CAAM
RNG could be used instead.

Fix this by boosting the priority by 2000 instead of 200.

Fixes: 541af946fe ("crypto: drbg - SP800-90A Deterministic Random Bit Generator")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2026-04-19 23:33:49 -07:00 committed by Herbert Xu
parent 6f49f00c98
commit a8a1f93080
1 changed files with 1 additions and 1 deletions
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crypto/drbg.c
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@ -1832,7 +1832,7 @@ static inline void __init drbg_fill_array(struct rng_alg *alg,
* it is selected.
*/
if (fips_enabled)
alg->base.cra_priority += 200;
alg->base.cra_priority += 2000;
alg->base.cra_ctxsize = sizeof(struct drbg_state);
alg->base.cra_module = THIS_MODULE;