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Test your applicationsUpgrade RHEL:9 nodejs-docs to version 1:16.19.1-2.el9_2 or higher.
This issue was patched in RHSA-2023:3586.
Note: Versions mentioned in the description apply only to the upstream nodejs-docs package and not the nodejs-docs package as distributed by RHEL.
See How to fix? for RHEL:9 relevant fixed versions and status.
c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist(). However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues. This issue has been fixed in 1.19.1.