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Robbie Harwood 96acda7332 verify_pefile: relax wrapper length check

[ Upstream commit 4fc5c74dde69a7eda172514aaeb5a7df3600adb3 ]

The PE Format Specification (section "The Attribute Certificate Table
(Image Only)") states that `dwLength` is to be rounded up to 8-byte
alignment when used for traversal.  Therefore, the field is not required
to be an 8-byte multiple in the first place.

Accordingly, pesign has not performed this alignment since version
0.110.  This causes kexec failure on pesign'd binaries with "PEFILE:
Signature wrapper len wrong".  Update the comment and relax the check.

Signed-off-by: Robbie Harwood <rharwood@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jarkko Sakkinen <jarkko@kernel.org>
cc: Eric Biederman <ebiederm@xmission.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: keyrings@vger.kernel.org
cc: linux-crypto@vger.kernel.org
cc: kexec@lists.infradead.org
Link: https://learn.microsoft.com/en-us/windows/win32/debug/pe-format#the-attribute-certificate-table-image-only
Link: https://github.com/rhboot/pesign
Link: https://lore.kernel.org/r/20230220171254.592347-2-rharwood@redhat.com/ # v2
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-04-20 12:04:40 +02:00

asymmetric_keys.h

KEYS: Generalise x509_request_asymmetric_key()

2016-04-11 22:41:56 +01:00

asymmetric_type.c

docs: Fix some broken references

2018-06-15 18:10:01 -03:00

Kconfig

crypto: asymmetric_keys - select CRYPTO_HASH where needed

2019-07-26 09:14:13 +02:00

Makefile

kbuild: rename *-asn1.[ch] to *.asn1.[ch]