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| author | David Howells <dhowells@redhat.com> | 2012-10-02 14:36:16 +0100 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2012-10-10 20:06:37 +1030 |
| commit | a5752d11b3853fcdb48b303573dd39b09d05e500 (patch) | |
| tree | fdbf54986ce97f473661d62510a513bb4ba79aa9 /crypto/asymmetric_keys/x509_parser.h | |
| parent | d5b719365ec13ef825f2548ba54903b9d029238c (diff) | |
| download | lwn-a5752d11b3853fcdb48b303573dd39b09d05e500.tar.gz lwn-a5752d11b3853fcdb48b303573dd39b09d05e500.zip | |
MODSIGN: Fix 32-bit overflow in X.509 certificate validity date checking
The current choice of lifetime for the autogenerated X.509 of 100 years,
putting the validTo date in 2112, causes problems on 32-bit systems where a
32-bit time_t wraps in 2106. 64-bit x86_64 systems seem to be unaffected.
This can result in something like:
Loading module verification certificates
X.509: Cert 6e03943da0f3b015ba6ed7f5e0cac4fe48680994 has expired
MODSIGN: Problem loading in-kernel X.509 certificate (-127)
Or:
X.509: Cert 6e03943da0f3b015ba6ed7f5e0cac4fe48680994 is not yet valid
MODSIGN: Problem loading in-kernel X.509 certificate (-129)
Instead of turning the dates into time_t values and comparing, turn the system
clock and the ASN.1 dates into tm structs and compare those piecemeal instead.
Reported-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'crypto/asymmetric_keys/x509_parser.h')
| -rw-r--r-- | crypto/asymmetric_keys/x509_parser.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/crypto/asymmetric_keys/x509_parser.h b/crypto/asymmetric_keys/x509_parser.h index 635053f7e962..f86dc5fcc4ad 100644 --- a/crypto/asymmetric_keys/x509_parser.h +++ b/crypto/asymmetric_keys/x509_parser.h @@ -18,8 +18,8 @@ struct x509_certificate { char *subject; /* Name of certificate subject */ char *fingerprint; /* Key fingerprint as hex */ char *authority; /* Authority key fingerprint as hex */ - time_t valid_from; - time_t valid_to; + struct tm valid_from; + struct tm valid_to; enum pkey_algo pkey_algo : 8; /* Public key algorithm */ enum pkey_algo sig_pkey_algo : 8; /* Signature public key algorithm */ enum pkey_hash_algo sig_hash_algo : 8; /* Signature hash algorithm */ |