{"id":"DEBIAN-CVE-2026-75883","details":"The code in pppd that formats a response to a PEAP Request packet in peap_response() copies an entire TLS record of up to 16384 bytes into the fixed global buffer outpacket_buf  without checking the available space and without implementing outgoing  PEAP fragmentation. Thus a pppd process connecting to a server which  requests PEAP authentication can be induced to corrupt global static  data following the outpacket_buf array, most likely causing incorrect behavior or a crash.","modified":"2026-09-23T08:47:26.566612697Z","published":"2026-09-18T16:17:09.167Z","upstream":["CVE-2026-75883"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-75883"}],"affected":[{"package":{"name":"ppp","ecosystem":"Debian:12","purl":"pkg:deb/debian/ppp?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.9-1+1.1","2.5.0-1+1","2.5.0-1+2","2.5.1-1+1","2.5.1-1+1~exp1","2.5.2-1+1","2.5.2-1+1.1","2.5.2-1+1.2","2.5.2-1+1~exp1","2.5.2-1+2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75883.json"}},{"package":{"name":"ppp","ecosystem":"Debian:13","purl":"pkg:deb/debian/ppp?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.2-1+1","2.5.2-1+1.1","2.5.2-1+1.2","2.5.2-1+2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75883.json"}},{"package":{"name":"ppp","ecosystem":"Debian:14","purl":"pkg:deb/debian/ppp?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.2-1+1","2.5.2-1+1.1","2.5.2-1+1.2","2.5.2-1+2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75883.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}