{"id":"ALPINE-CVE-2026-39314","details":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c) allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a 33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd's Restart=on-failure, an attacker can repeat the crash for sustained denial of service.","modified":"2026-04-29T06:32:25.701614Z","published":"2026-04-07T17:16:37.073Z","upstream":["CVE-2026-39314"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2026-39314"}],"affected":[{"package":{"name":"cups","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/cups?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-r0"}]}],"versions":["1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.2-r2","1.4.3-r0","1.4.3-r1","1.4.3-r2","1.4.3-r3","1.4.4-r0","1.4.4-r1","1.4.5-r0","1.4.6-r0","1.4.7-r0","1.4.8-r0","1.5.0-r0","1.5.0-r1","1.5.0-r2","1.5.2-r0","1.5.2-r1","1.5.2-r2","1.5.2-r3","1.5.3-r0","1.5.4-r0","1.5.4-r1","1.6.1-r0","1.6.1-r1","1.6.2-r0","1.6.2-r1","1.6.3-r0","1.6.4-r0","1.7.0-r0","1.7.0-r1","1.7.1-r0","1.7.2-r0","1.7.3-r0","1.7.3-r1","1.7.4-r0","1.7.5-r0","2.0.0-r0","2.0.1-r0","2.0.2-r0","2.0.2-r1","2.0.2-r2","2.0.3-r0","2.0.4-r0","2.1.0-r0","2.1.1-r0","2.1.2-r0","2.1.3-r0","2.1.3-r1","2.1.4-r0","2.2.1-r0","2.2.1-r1","2.2.10-r0","2.2.11-r0","2.2.12-r0","2.2.12-r1","2.2.12-r2","2.2.2-r0","2.2.2-r1","2.2.2-r2","2.2.3-r0","2.2.3-r1","2.2.4-r0","2.2.5-r0","2.2.5-r1","2.2.6-r0","2.2.9-r0","2.3.3-r0","2.3.3-r1","2.3.3-r2","2.3.3-r3","2.3.3-r4","2.4.0-r0","2.4.1-r0","2.4.1-r1","2.4.16-r0","2.4.2-r0","2.4.2-r1","2.4.2-r2","2.4.2-r3","2.4.2-r4","2.4.2-r5","2.4.2-r6","2.4.2-r7","2.4.3-r0","2.4.3-r1","2.4.4-r0","2.4.5-r0","2.4.6-r0","2.4.7-r0","2.4.7-r1","2.4.7-r2","2.4.7-r3","2.4.7-r4","2.4.8-r0","2.4.9-r0","2.4.9-r1"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-39314.json"}},{"package":{"name":"cups","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/cups?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-r0"}]}],"versions":["1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.2-r2","1.4.3-r0","1.4.3-r1","1.4.3-r2","1.4.3-r3","1.4.4-r0","1.4.4-r1","1.4.5-r0","1.4.6-r0","1.4.7-r0","1.4.8-r0","1.5.0-r0","1.5.0-r1","1.5.0-r2","1.5.2-r0","1.5.2-r1","1.5.2-r2","1.5.2-r3","1.5.3-r0","1.5.4-r0","1.5.4-r1","1.6.1-r0","1.6.1-r1","1.6.2-r0","1.6.2-r1","1.6.3-r0","1.6.4-r0","1.7.0-r0","1.7.0-r1","1.7.1-r0","1.7.2-r0","1.7.3-r0","1.7.3-r1","1.7.4-r0","1.7.5-r0","2.0.0-r0","2.0.1-r0","2.0.2-r0","2.0.2-r1","2.0.2-r2","2.0.3-r0","2.0.4-r0","2.1.0-r0","2.1.1-r0","2.1.2-r0","2.1.3-r0","2.1.3-r1","2.1.4-r0","2.2.1-r0","2.2.1-r1","2.2.10-r0","2.2.11-r0","2.2.12-r0","2.2.12-r1","2.2.12-r2","2.2.2-r0","2.2.2-r1","2.2.2-r2","2.2.3-r0","2.2.3-r1","2.2.4-r0","2.2.5-r0","2.2.5-r1","2.2.6-r0","2.2.9-r0","2.3.3-r0","2.3.3-r1","2.3.3-r2","2.3.3-r3","2.3.3-r4","2.4.0-r0","2.4.1-r0","2.4.1-r1","2.4.10-r0","2.4.10-r1","2.4.11-r0","2.4.16-r0","2.4.2-r0","2.4.2-r1","2.4.2-r2","2.4.2-r3","2.4.2-r4","2.4.2-r5","2.4.2-r6","2.4.2-r7","2.4.3-r0","2.4.3-r1","2.4.4-r0","2.4.5-r0","2.4.6-r0","2.4.7-r0","2.4.7-r1","2.4.7-r2","2.4.7-r3","2.4.7-r4","2.4.8-r0","2.4.9-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-39314.json"}},{"package":{"name":"cups","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/cups?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-r0"}]}],"versions":["1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.2-r2","1.4.3-r0","1.4.3-r1","1.4.3-r2","1.4.3-r3","1.4.4-r0","1.4.4-r1","1.4.5-r0","1.4.6-r0","1.4.7-r0","1.4.8-r0","1.5.0-r0","1.5.0-r1","1.5.0-r2","1.5.2-r0","1.5.2-r1","1.5.2-r2","1.5.2-r3","1.5.3-r0","1.5.4-r0","1.5.4-r1","1.6.1-r0","1.6.1-r1","1.6.2-r0","1.6.2-r1","1.6.3-r0","1.6.4-r0","1.7.0-r0","1.7.0-r1","1.7.1-r0","1.7.2-r0","1.7.3-r0","1.7.3-r1","1.7.4-r0","1.7.5-r0","2.0.0-r0","2.0.1-r0","2.0.2-r0","2.0.2-r1","2.0.2-r2","2.0.3-r0","2.0.4-r0","2.1.0-r0","2.1.1-r0","2.1.2-r0","2.1.3-r0","2.1.3-r1","2.1.4-r0","2.2.1-r0","2.2.1-r1","2.2.10-r0","2.2.11-r0","2.2.12-r0","2.2.12-r1","2.2.12-r2","2.2.2-r0","2.2.2-r1","2.2.2-r2","2.2.3-r0","2.2.3-r1","2.2.4-r0","2.2.5-r0","2.2.5-r1","2.2.6-r0","2.2.9-r0","2.3.3-r0","2.3.3-r1","2.3.3-r2","2.3.3-r3","2.3.3-r4","2.4.0-r0","2.4.1-r0","2.4.1-r1","2.4.10-r0","2.4.10-r1","2.4.11-r0","2.4.16-r0","2.4.2-r0","2.4.2-r1","2.4.2-r2","2.4.2-r3","2.4.2-r4","2.4.2-r5","2.4.2-r6","2.4.2-r7","2.4.3-r0","2.4.3-r1","2.4.4-r0","2.4.5-r0","2.4.6-r0","2.4.7-r0","2.4.7-r1","2.4.7-r2","2.4.7-r3","2.4.7-r4","2.4.8-r0","2.4.9-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-39314.json"}},{"package":{"name":"cups","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/cups?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-r0"}]}],"versions":["1.4.1-r0","1.4.2-r0","1.4.2-r1","1.4.2-r2","1.4.3-r0","1.4.3-r1","1.4.3-r2","1.4.3-r3","1.4.4-r0","1.4.4-r1","1.4.5-r0","1.4.6-r0","1.4.7-r0","1.4.8-r0","1.5.0-r0","1.5.0-r1","1.5.0-r2","1.5.2-r0","1.5.2-r1","1.5.2-r2","1.5.2-r3","1.5.3-r0","1.5.4-r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