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[9.20] fix: usr: dnssec-signzone needs to check for a NULL key when setting offline

dnssec-signzone could dereference a NULL key pointer when resigning a zone.  This has been fixed.

Closes #5192

Backport of MR !10161

Merge branch 'backport-5192-dnssec-signzone-needs-to-check-for-a-null-key-when-setting-offline-9.20' into 'bind-9.20'

See merge request isc-projects/bind9!10169
This commit is contained in:
Mark Andrews
2025-02-25 23:21:58 +00:00

View File

@@ -551,7 +551,7 @@ signset(dns_diff_t *del, dns_diff_t *add, dns_dbnode_t *node, dns_name_t *name,
future = isc_serial_lt(now, rrsig.timesigned);
key = keythatsigned(&rrsig);
offline = key->pubkey;
offline = (key != NULL) ? key->pubkey : false;
sig_format(&rrsig, sigstr, sizeof(sigstr));
expired = isc_serial_gt(now, rrsig.timeexpire);
refresh = isc_serial_gt(now + cycle, rrsig.timeexpire);