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integrity: Check for NULL returned by asymmetric_key_public_key

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Check for a NULL pointer returned by asymmetric_key_public_key and return
-ENOKEY in this case.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Tested-by: Kamlesh Kumar <kam@juniper.net>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
This commit is contained in:
Stefan Berger 2026-04-16 11:40:36 -04:00 committed by Mimi Zohar
parent 69fc647423
commit c93a5f038c
1 changed files with 4 additions and 0 deletions
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4
security/integrity/digsig_asymmetric.c
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@ -108,6 +108,10 @@ int asymmetric_verify(struct key *keyring, const char *sig,
pks.hash_algo = hash_algo_name[hdr->hash_algo];
pk = asymmetric_key_public_key(key);
if (!pk) {
ret = -ENOKEY;
goto out;
}
pks.pkey_algo = pk->pkey_algo;
if (!strcmp(pk->pkey_algo, "rsa")) {
pks.encoding = "pkcs1";