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crypto: n2 - Set err to EINVAL if snprintf fails for hmac

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BugLink: https://bugs.launchpad.net/bugs/2089340

[ Upstream commit ce212d2afca47acd366a2e74c76fe82c31f785ab ]

Return EINVAL if the snprintf check fails when constructing the
algorithm names.

Fixes: 8c20982cac ("crypto: n2 - Silence gcc format-truncation false positive warnings")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202409090726.TP0WfY7p-lkp@intel.com/
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Herbert Xu
2024-09-10 17:30:24 +08:00
committed by Mehmet Basaran
parent b6a3f2702e
commit 3a01686ef6
1 changed files with 1 additions and 0 deletions
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drivers/crypto/n2_core.c
+1
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@@ -1357,6 +1357,7 @@ static int __n2_register_one_hmac(struct n2_ahash_alg *n2ahash)
ahash->setkey = n2_hmac_async_setkey;
base = &ahash->halg.base;
err = -EINVAL;
if (snprintf(base->cra_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)",
p->child_alg) >= CRYPTO_MAX_ALG_NAME)
goto out_free_p;