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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git

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This commit is contained in:
Stephen Rothwell 2025-01-13 13:11:19 +11:00
commit 8b78c9148d
2 changed files with 19 additions and 5 deletions
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2
include/keys/system_keyring.h
View File

@ -73,7 +73,6 @@ static inline void __init set_machine_trusted_keys(struct key *keyring)
}
#endif
extern struct pkcs7_message *pkcs7;
#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
extern int mark_hash_blacklisted(const u8 *hash, size_t hash_len,
enum blacklist_hash_type hash_type);
@ -93,6 +92,7 @@ static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len)
}
#endif
struct pkcs7_message;
#ifdef CONFIG_SYSTEM_REVOCATION_LIST
extern int add_key_to_revocation_list(const char *data, size_t size);
extern int is_key_on_revocation_list(struct pkcs7_message *pkcs7);

22
security/keys/trusted-keys/trusted_dcp.c
View File

@ -201,12 +201,16 @@ static int trusted_dcp_seal(struct trusted_key_payload *p, char *datablob)
{
struct dcp_blob_fmt *b = (struct dcp_blob_fmt *)p->blob;
int blen, ret;
u8 plain_blob_key[AES_KEYSIZE_128];
u8 *plain_blob_key;
blen = calc_blob_len(p->key_len);
if (blen > MAX_BLOB_SIZE)
return -E2BIG;
plain_blob_key = kmalloc(AES_KEYSIZE_128, GFP_KERNEL);
if (!plain_blob_key)
return -ENOMEM;
b->fmt_version = DCP_BLOB_VERSION;
get_random_bytes(b->nonce, AES_KEYSIZE_128);
get_random_bytes(plain_blob_key, AES_KEYSIZE_128);
@ -229,7 +233,8 @@ static int trusted_dcp_seal(struct trusted_key_payload *p, char *datablob)
ret = 0;
out:
memzero_explicit(plain_blob_key, sizeof(plain_blob_key));
memzero_explicit(plain_blob_key, AES_KEYSIZE_128);
kfree(plain_blob_key);
return ret;
}
@ -238,7 +243,7 @@ static int trusted_dcp_unseal(struct trusted_key_payload *p, char *datablob)
{
struct dcp_blob_fmt *b = (struct dcp_blob_fmt *)p->blob;
int blen, ret;
u8 plain_blob_key[AES_KEYSIZE_128];
u8 *plain_blob_key = NULL;
if (b->fmt_version != DCP_BLOB_VERSION) {
pr_err("DCP blob has bad version: %i, expected %i\n",
@ -256,6 +261,12 @@ static int trusted_dcp_unseal(struct trusted_key_payload *p, char *datablob)
goto out;
}
plain_blob_key = kmalloc(AES_KEYSIZE_128, GFP_KERNEL);
if (!plain_blob_key) {
ret = -ENOMEM;
goto out;
}
ret = decrypt_blob_key(b->blob_key, plain_blob_key);
if (ret) {
pr_err("Unable to decrypt blob key: %i\n", ret);
@ -271,7 +282,10 @@ static int trusted_dcp_unseal(struct trusted_key_payload *p, char *datablob)
ret = 0;
out:
memzero_explicit(plain_blob_key, sizeof(plain_blob_key));
if (plain_blob_key) {
memzero_explicit(plain_blob_key, AES_KEYSIZE_128);
kfree(plain_blob_key);
}
return ret;
}