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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. An out-of-bounds read in the stbtt_GetGlyphShape component of nothings stb commit 31c1ad3 allows attackers to cause a Denial of Service (DoS) via sending a crafted TTF file.
Neither the CVE https://www.cve.org/CVERecord?id=CVE-2026-79515 nor the linked upstream issue https://github.com/nothings/stb/issues/1962 includes a patch. Given that the stb_truetype library begins with the following prominent warning, // ======================================================================= // // NO SECURITY GUARANTEE -- DO NOT USE THIS ON UNTRUSTED FONT FILES // // This library does no range checking of the offsets found in the file, // meaning an attacker can use it to read arbitrary memory. // // ======================================================================= it’s certain that upstream would not consider this a valid bug. For those reasons, I’m not interested in trying to develop a patch for this, either. Given that there’s no patch and probably never will be one, it doesn’t seem useful to track this downstream. Feel free to reopen this or open a PR if a proposed patch appears, but please understand that stb_truetype is expected to be absolutely riddled with problems like this when used outside of the applications for which it was designed.