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password_pbkdf2: fix memory leak 

Found by: Coverity scan.
CID: 96656
This commit is contained in:
Andrei Borzenkov 2016-01-12 20:53:26 +03:00
parent 5db2190f2c
commit f3c84fa798
1 changed files with 9 additions and 8 deletions
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17
grub-core/commands/password_pbkdf2.c
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@ -45,6 +45,7 @@ check_password (const char *user, const char *entered, void *pin)
grub_uint8_t *buf;
struct pbkdf2_password *pass = pin;
gcry_err_code_t err;
grub_err_t ret;
buf = grub_malloc (pass->buflen);
if (!buf)
@ -55,17 +56,17 @@ check_password (const char *user, const char *entered, void *pin)
pass->salt, pass->saltlen, pass->c,
buf, pass->buflen);
if (err)
ret = grub_crypto_gcry_error (err);
else if (grub_crypto_memcmp (buf, pass->expected, pass->buflen) != 0)
ret = GRUB_ACCESS_DENIED;
else
{
grub_free (buf);
return grub_crypto_gcry_error (err);
grub_auth_authenticate (user);
ret = GRUB_ERR_NONE;
}
if (grub_crypto_memcmp (buf, pass->expected, pass->buflen) != 0)
return GRUB_ACCESS_DENIED;
grub_auth_authenticate (user);
return GRUB_ERR_NONE;
grub_free (buf);
return ret;
}
static inline int