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crypto: qce - fix uaf on qce_aead_register_one 

Pointer alg points to sub field of tmpl, it
is dereferenced after tmpl is freed. Fix
this by accessing alg before free tmpl.

Fixes: 9363efb4 ("crypto: qce - Add support for AEAD algorithms")
Signed-off-by: Chengfeng Ye <cyeaa@connect.ust.hk>
Acked-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Chengfeng Ye 2021-11-04 06:28:07 -07:00 committed by Herbert Xu
parent 574c833ef3
commit 4a9dbd0219
1 changed files with 1 additions and 1 deletions
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2
drivers/crypto/qce/aead.c
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@ -802,8 +802,8 @@ static int qce_aead_register_one(const struct qce_aead_def *def, struct qce_devi
ret = crypto_register_aead(alg); ret = crypto_register_aead(alg);
if (ret) { if (ret) {
kfree(tmpl);
dev_err(qce->dev, "%s registration failed\n", alg->base.cra_name); dev_err(qce->dev, "%s registration failed\n", alg->base.cra_name);
kfree(tmpl);
return ret; return ret;
} }