upstream/bind9
1
0
Fork 0
mirror of https://github.com/isc-projects/bind9.git synced 2026-06-06 22:32:04 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

[9.20] fix: usr: Fix assertion failure when receiving DNS responses over TCP

Browse source 
When matching the received Query ID in the TCP connection,
an invalid received Query ID can very rarely cause assertion
failure.

Closes #4952

Backport of MR !9580

Merge branch 'backport-4952-check-whether-QID-is-not-deleted-9.20' into 'bind-9.20'

See merge request isc-projects/bind9!9582
This commit is contained in:
Ondřej Surý 2024-10-02 12:07:49 +00:00
commit e2058ab461
1 changed files with 3 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
lib/dns/dispatch.c
View file

@ -694,7 +694,9 @@ tcp_recv_success(dns_dispatch_t *disp, isc_region_t *region,
dns_dispentry_t *resp = cds_lfht_entry(cds_lfht_iter_get_node(&iter),
dns_dispentry_t, ht_node);
if (resp != NULL) {
/* Skip responses that are not ours */
if (resp != NULL && resp->disp == disp) {
if (!resp->reading) {
/*
* We already got a message for this QID and weren't