A flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity of the input string, which allows a possible arbitrary length stack overflow. This issue may cause a denial of service or a limited impact on confidentiality and integrity.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-4904
• c-ares/c-ares#496
• https://bugzilla.redhat.com/show_bug.cgi?id=2168631
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33LDNS6RPOPP36Z4MPWXALUQZXJCWJS2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/33LDNS6RPOPP36Z4MPWXALUQZXJCWJS2/
• https://security.gentoo.org/glsa/202401-02