From 124df926090b32a998483f6e43ebeccdbe5b5302 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 18 Jun 2013 17:40:44 +0100 Subject: [PATCH] X.509: Remove certificate date checks Remove the certificate date checks that are performed when a certificate is parsed. There are two checks: a valid from and a valid to. The first check is causing a lot of problems with system clocks that don't keep good time and the second places an implicit expiry date upon the kernel when used for module signing, so do we really need them? Signed-off-by: David Howells cc: David Woodhouse cc: Rusty Russell cc: Josh Boyer cc: Alexander Holler cc: stable@vger.kernel.org --- crypto/asymmetric_keys/x509_public_key.c | 38 -------------------------------- 1 file changed, 38 deletions(-) diff --git a/crypto/asymmetric_keys/x509_public_key.c b/crypto/asymmetric_keys/x509_public_key.c index 0f55e3b..c1540e8 100644 --- a/crypto/asymmetric_keys/x509_public_key.c +++ b/crypto/asymmetric_keys/x509_public_key.c @@ -108,7 +108,6 @@ EXPORT_SYMBOL_GPL(x509_check_signature); static int x509_key_preparse(struct key_preparsed_payload *prep) { struct x509_certificate *cert; - struct tm now; size_t srlen, sulen; char *desc = NULL; int ret; @@ -150,43 +149,6 @@ static int x509_key_preparse(struct key_preparsed_payload *prep) goto error_free_cert; } - time_to_tm(CURRENT_TIME.tv_sec, 0, &now); - pr_devel("Now: %04ld-%02d-%02d %02d:%02d:%02d\n", - now.tm_year + 1900, now.tm_mon + 1, now.tm_mday, - now.tm_hour, now.tm_min, now.tm_sec); - if (now.tm_year < cert->valid_from.tm_year || - (now.tm_year == cert->valid_from.tm_year && - (now.tm_mon < cert->valid_from.tm_mon || - (now.tm_mon == cert->valid_from.tm_mon && - (now.tm_mday < cert->valid_from.tm_mday || - (now.tm_mday == cert->valid_from.tm_mday && - (now.tm_hour < cert->valid_from.tm_hour || - (now.tm_hour == cert->valid_from.tm_hour && - (now.tm_min < cert->valid_from.tm_min || - (now.tm_min == cert->valid_from.tm_min && - (now.tm_sec < cert->valid_from.tm_sec - ))))))))))) { - pr_warn("Cert %s is not yet valid\n", cert->fingerprint); - ret = -EKEYREJECTED; - goto error_free_cert; - } - if (now.tm_year > cert->valid_to.tm_year || - (now.tm_year == cert->valid_to.tm_year && - (now.tm_mon > cert->valid_to.tm_mon || - (now.tm_mon == cert->valid_to.tm_mon && - (now.tm_mday > cert->valid_to.tm_mday || - (now.tm_mday == cert->valid_to.tm_mday && - (now.tm_hour > cert->valid_to.tm_hour || - (now.tm_hour == cert->valid_to.tm_hour && - (now.tm_min > cert->valid_to.tm_min || - (now.tm_min == cert->valid_to.tm_min && - (now.tm_sec > cert->valid_to.tm_sec - ))))))))))) { - pr_warn("Cert %s has expired\n", cert->fingerprint); - ret = -EKEYEXPIRED; - goto error_free_cert; - } - cert->pub->algo = pkey_algo[cert->pub->pkey_algo]; cert->pub->id_type = PKEY_ID_X509; -- 2.7.4