{"id":"DEBIAN-CVE-2026-95838","details":"containerd is an open-source container runtime. Prior to 1.7.35, 2.0.12, 2.2.8, and 2.3.5, containerd's layer unpack handler repeatedly traverses directories for certain opaque whiteout configurations. A malicious image layer can trigger repeated directory traversals while opaque whiteouts are processed. Pulling or importing the image can consume CPU, delay container startup, and reduce image-pull concurrency for unrelated deployments. This issue is fixed in versions 1.7.35, 2.0.12, 2.2.8, and 2.3.5.","modified":"2026-10-14T09:47:41.102081544Z","published":"2026-10-12T20:17:10.577Z","upstream":["CVE-2026-95838"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-95838"}],"affected":[{"package":{"name":"containerd","ecosystem":"Debian:12","purl":"pkg:deb/debian/containerd?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.20~ds1-1","1.6.20~ds1-1+deb12u1","1.6.20~ds1-1+deb12u2","1.6.20~ds1-1+deb12u3","1.6.20~ds1-2","1.6.24~ds1-1","1.6.24~ds1-2","1.7.18~ds1-1","1.7.18~ds1-2","1.7.18~ds1-3","1.7.18~ds1-4","1.7.18~ds1-5","1.7.18~ds1-6","1.7.18~ds2-1","1.7.20~ds2-1","1.7.20~ds2-2","1.7.21~ds2-1","1.7.22~ds1-1","1.7.23~ds1-1","1.7.23~ds1-2","1.7.23~ds1-3","1.7.23~ds2-1","1.7.24~ds1-1","1.7.24~ds1-10","1.7.24~ds1-2","1.7.24~ds1-3","1.7.24~ds1-4","1.7.24~ds1-5","1.7.24~ds1-6","1.7.24~ds1-7","1.7.24~ds1-8","1.7.24~ds1-9","2.1.4~ds2-2","2.1.4~ds2-3","2.1.4~ds2-4","2.1.4~ds2-5","2.1.4~ds2-6","2.1.4~ds2-7","2.1.4~ds2-8","2.1.6+ds1-1","2.1.9+ds1-1","2.1.9+ds1-2","2.1.9+ds1-3","2.1.9+ds1-4","2.1.9+ds1-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95838.json"}},{"package":{"name":"containerd","ecosystem":"Debian:13","purl":"pkg:deb/debian/containerd?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.24~ds1-10","1.7.24~ds1-6","1.7.24~ds1-6+deb13u1","1.7.24~ds1-7","1.7.24~ds1-8","1.7.24~ds1-9","2.1.4~ds2-2","2.1.4~ds2-3","2.1.4~ds2-4","2.1.4~ds2-5","2.1.4~ds2-6","2.1.4~ds2-7","2.1.4~ds2-8","2.1.6+ds1-1","2.1.9+ds1-1","2.1.9+ds1-2","2.1.9+ds1-3","2.1.9+ds1-4","2.1.9+ds1-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95838.json"}},{"package":{"name":"containerd","ecosystem":"Debian:14","purl":"pkg:deb/debian/containerd?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.24~ds1-10","1.7.24~ds1-6","1.7.24~ds1-7","1.7.24~ds1-8","1.7.24~ds1-9","2.1.4~ds2-2","2.1.4~ds2-3","2.1.4~ds2-4","2.1.4~ds2-5","2.1.4~ds2-6","2.1.4~ds2-7","2.1.4~ds2-8","2.1.6+ds1-1","2.1.9+ds1-1","2.1.9+ds1-2","2.1.9+ds1-3","2.1.9+ds1-4","2.1.9+ds1-5"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95838.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}