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linux/crypto/asymmetric_keys
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Tianjia Zhang 7178a107f5 X.509: Fix crash caused by NULL pointer 
On the following call path, `sig->pkey_algo` is not assigned
in asymmetric_key_verify_signature(), which causes runtime
crash in public_key_verify_signature().

  keyctl_pkey_verify
    asymmetric_key_verify_signature
      verify_signature
        public_key_verify_signature

This patch simply check this situation and fixes the crash
caused by NULL pointer.

Fixes: 2155256396 ("X.509: support OSCCA SM2-with-SM3 certificate verification")
Reported-by: Tobias Markus <tobias@markus-regensburg.de>
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-and-tested-by: Toke Høiland-Jørgensen <toke@redhat.com>
Tested-by: João Fonseca <jpedrofonseca@ua.pt>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Cc: stable@vger.kernel.org # v5.10+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2021-01-20 11:33:51 -08:00
..
Kconfig crypto: asymmetric_keys - select CRYPTO_HASH where needed 2019-06-27 14:28:01 +08:00
Makefile X.509: Fix modular build of public_key_sm2 2020-10-08 16:39:14 +11:00
asym_tpm.c crypto: asym_tpm: correct zero out potential secrets 2020-12-31 10:48:53 +01:00
asymmetric_keys.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
asymmetric_type.c docs: crypto: convert asymmetric-keys.txt to ReST 2020-06-19 14:03:46 -06:00
mscode.asn1 pefile: Parse the "Microsoft individual code signing" data blob 2014-07-09 14:58:37 +01:00
mscode_parser.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
pkcs7.asn1 PKCS#7: Appropriately restrict authenticated attributes and content type 2015-08-12 17:01:01 +01:00
pkcs7_key_type.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
pkcs7_parser.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
pkcs7_parser.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
pkcs7_trust.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
pkcs7_verify.c PKCS#7: Introduce pkcs7_get_digest() 2019-08-05 18:40:19 -04:00
pkcs8.asn1 KEYS: Implement PKCS#8 RSA Private Key parser [ver #2] 2018-10-26 09:30:46 +01:00
pkcs8_parser.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
public_key.c X.509: Fix crash caused by NULL pointer 2021-01-20 11:33:51 -08:00
restrict.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
signature.c docs: crypto: convert asymmetric-keys.txt to ReST 2020-06-19 14:03:46 -06:00
tpm.asn1 KEYS: Add parser for TPM-based keys [ver #2] 2018-10-26 09:30:46 +01:00
tpm_parser.c KEYS: Add parser for TPM-based keys [ver #2] 2018-10-26 09:30:46 +01:00
verify_pefile.c mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
verify_pefile.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
x509.asn1 X.509: parse public key parameters from x509 for akcipher 2019-04-18 22:15:02 +08:00
x509_akid.asn1 X.509: Extract both parts of the AuthorityKeyIdentifier 2015-08-07 16:26:13 +01:00
x509_cert_parser.c X.509: support OSCCA certificate parse 2020-09-25 17:48:54 +10:00
x509_parser.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
x509_public_key.c X.509: support OSCCA SM2-with-SM3 certificate verification 2020-09-25 17:48:55 +10:00