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
asymmetric_keys.h
asymmetric_type.c
Kconfig
Makefile
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
restrict.c
signature.c
tpm_parser.c
tpm.asn1
verify_pefile.c
verify_pefile.h
x509_akid.asn1
x509_cert_parser.c
x509_parser.h
x509_public_key.c
x509.asn1