Tianjia Zhang 90bd4a0cf5 X.509: Fix crash caused by NULL pointer ... commit 7178a107f5ea7bdb1cc23073234f0ded0ef90ec7 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-01-23 16:03:58 +01:00
..
asym_tpm.c	crypto: asym_tpm: correct zero out potential secrets	2021-01-12 20:18:17 +01:00
asymmetric_keys.h
asymmetric_type.c	docs: crypto: convert asymmetric-keys.txt to ReST	2020-06-19 14:03:46 -06:00
Kconfig
Makefile	X.509: Fix modular build of public_key_sm2	2020-10-08 16:39:14 +11:00
mscode_parser.c
mscode.asn1
pkcs7_key_type.c
pkcs7_parser.c
pkcs7_parser.h
pkcs7_trust.c
pkcs7_verify.c
pkcs7.asn1
pkcs8_parser.c
pkcs8.asn1
public_key.c	X.509: Fix crash caused by NULL pointer	2021-01-23 16:03:58 +01:00
restrict.c
signature.c	docs: crypto: convert asymmetric-keys.txt to ReST	2020-06-19 14:03:46 -06:00
tpm_parser.c
tpm.asn1
verify_pefile.c	mm, treewide: rename kzfree() to kfree_sensitive()	2020-08-07 11:33:22 -07:00
verify_pefile.h
x509_akid.asn1
x509_cert_parser.c	X.509: support OSCCA certificate parse	2020-09-25 17:48:54 +10:00
x509_parser.h
x509_public_key.c	X.509: support OSCCA SM2-with-SM3 certificate verification	2020-09-25 17:48:55 +10:00
x509.asn1