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Test your applicationsUpgrade RHEL:9 glibc-langpack-kw to version 0:2.34-100.el9_4.2 or higher.
This issue was patched in RHSA-2024:3339.
Note: Versions mentioned in the description apply only to the upstream glibc-langpack-kw package and not the glibc-langpack-kw package as distributed by RHEL.
See How to fix? for RHEL:9 relevant fixed versions and status.
nscd: Stack-based buffer overflow in netgroup cache
If the Name Service Cache Daemon's (nscd) fixed size cache is exhausted by client requests then a subsequent client request for netgroup data may result in a stack-based buffer overflow. This flaw was introduced in glibc 2.15 when the cache was added to nscd.
This vulnerability is only present in the nscd binary.