{"id":"DEBIAN-CVE-2026-40393","details":"In Mesa before 25.3.6 and 26 before 26.0.1, out-of-bounds memory access can occur in WebGPU because the amount of to-be-allocated data depends on an untrusted party, and is then used for alloca.","modified":"2026-09-14T17:03:29.484427563Z","published":"2026-04-12T19:16:20.797Z","upstream":["CVE-2026-40393"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-40393"}],"affected":[{"package":{"name":"mesa","ecosystem":"Debian:12","purl":"pkg:deb/debian/mesa?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"22.3.6-1+deb12u2"}]}],"versions":["22.3.6-1+deb12u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40393.json"}},{"package":{"name":"mesa","ecosystem":"Debian:13","purl":"pkg:deb/debian/mesa?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"25.0.7-2+deb13u1"}]}],"versions":["25.0.7-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40393.json"}},{"package":{"name":"mesa","ecosystem":"Debian:14","purl":"pkg:deb/debian/mesa?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26.0.1-1"}]}],"versions":["25.0.7-2","25.1.0-1","25.1.5-1","25.1.7-1","25.2.0-1","25.2.1-1","25.2.1-2","25.2.2-1","25.2.3-1","25.2.3-1~bpo13+1","25.2.4-1","25.2.4-1~bpo13+1","25.2.4-1~bpo13+2","25.2.5-1","25.2.6-1","25.2.6-1~bpo13+1","25.2.7-1","25.2.8-1","25.2.8-2","25.3.0-1","25.3.0~rc1-1","25.3.0~rc2-1","25.3.0~rc4-1","25.3.1-1","25.3.2-1","25.3.2-2","25.3.3-1","26.0.0-1","26.0.0~rc3-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40393.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}