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Merge branch 'lwip/dns_stack_corruption_fix_v5.3' into 'release/v5.3'

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fix(dns): Added addr_cnt to DNS resolution to fix multi-IP buffer overflow (v5.3)

See merge request espressif/esp-idf!49195
This commit is contained in:
David Čermák
2026-09-18 21:46:04 +08:00
parent 60ced6466d 7ab85eb4dc
commit c9c35901aa
2 changed files with 5 additions and 1 deletions
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4
components/lwip/Kconfig
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@@ -1155,9 +1155,13 @@ menu "LWIP"
config LWIP_DNS_MAX_HOST_IP
int "Maximum number of IP addresses per host"
range 1 8
default 1
help
Maximum number of IP addresses that can be returned by DNS queries for a single host.
Allowed values are 1--8. In lwIP this is ``DNS_MAX_HOST_IP``. Multi-IP DNS APIs
require the caller's ``addr_cnt`` argument to satisfy 0 < addr_cnt <= DNS_MAX_HOST_IP;
otherwise they return ``ERR_ARG``.
config LWIP_DNS_MAX_SERVERS
int "Maximum number of DNS servers"

2
components/lwip/lwip

Submodule components/lwip/lwip updated: 392707e5c3...ae0674e0c5