Commit 819966c0 authored by Stephan Müller's avatar Stephan Müller Committed by Herbert Xu

crypto: drbg - always try to free Jitter RNG instance

The Jitter RNG is unconditionally allocated as a seed source follwoing
the patch 97f2650e. Thus, the instance must always be deallocated.

Reported-by: syzbot+2e635807decef724a1fa@syzkaller.appspotmail.com
Fixes: 97f2650e ("crypto: drbg - always seeded with SP800-90B ...")
Signed-off-by: default avatarStephan Mueller <smueller@chronox.de>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 1f5b07f5
...@@ -1631,9 +1631,11 @@ static int drbg_uninstantiate(struct drbg_state *drbg) ...@@ -1631,9 +1631,11 @@ static int drbg_uninstantiate(struct drbg_state *drbg)
if (drbg->random_ready.func) { if (drbg->random_ready.func) {
del_random_ready_callback(&drbg->random_ready); del_random_ready_callback(&drbg->random_ready);
cancel_work_sync(&drbg->seed_work); cancel_work_sync(&drbg->seed_work);
}
if (!IS_ERR_OR_NULL(drbg->jent))
crypto_free_rng(drbg->jent); crypto_free_rng(drbg->jent);
drbg->jent = NULL; drbg->jent = NULL;
}
if (drbg->d_ops) if (drbg->d_ops)
drbg->d_ops->crypto_fini(drbg); drbg->d_ops->crypto_fini(drbg);
......
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