{"id":"CVE-2026-95838","summary":"containerd: Unpack DoS via repeated opaque whiteouts","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.","aliases":["GHSA-rp3h-jf77-q9p4"],"modified":"2026-10-14T10:31:04.466959129Z","published":"2026-10-12T19:53:24.599Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-400","CWE-407"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/95xxx/CVE-2026-95838.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/95xxx/CVE-2026-95838.json"},{"type":"ADVISORY","url":"https://github.com/containerd/containerd/security/advisories/GHSA-rp3h-jf77-q9p4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-95838"},{"type":"FIX","url":"https://github.com/containerd/containerd/commit/e6ca378dcfa610d06589a3ac96aa992de866e4f0"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/containerd/containerd","events":[{"introduced":"0"},{"introduced":"de55dfc0f184aa6ed19de4dc02a3a4bae3476c88"},{"introduced":"1c4457e00facac03ce1d75f7b6777a7a851e5c41"},{"introduced":"2976f38ccbfcda5ef1364d63d60b0a304e4bf94a"},{"fixed":"0fab6e1c57c38c945dd004bd1d560d1b0915822f"},{"fixed":"f8877dc22535f7c22699399c1dfe6160018792fa"},{"fixed":"941d3ed89ad60ad91cac377a16ecde23e2143083"},{"fixed":"1294c24a7da8e5a793ed378161673abe94118892"},{"fixed":"e6ca378dcfa610d06589a3ac96aa992de866e4f0"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.7.35"},{"introduced":"2.0.0-beta.0"},{"fixed":"2.0.12"},{"introduced":"2.2.0"},{"fixed":"2.2.8"},{"introduced":"2.3.0"},{"fixed":"2.3.5"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["api/v1.12.0-rc.0","v2.3.4","v2.2.7","v2.4.0-beta.0","api/v1.12.0-beta.0","v1.7.34","v2.2.6","v2.0.11","v2.3.3","v1.7.33","v2.0.10","v2.2.5","v2.3.2","v2.0.9","v1.7.32","v2.3.1","v2.2.4","api/v1.11.1","v2.3.0","v2.0.7","v1.7.31","v2.2.3","v2.0.8","v2.2.2","v1.7.30","v2.2.1","v1.7.29","v2.2.0","v1.7.28","v2.0.6","v2.0.5","v1.7.27","v2.0.4","v1.7.26","v2.0.3","v1.7.25","v2.0.2","v2.0.1","v1.7.24","v2.0.0","api/v1.8.0","v1.7.23","v2.0.0-rc.6","api/v1.8.0-rc.4","v1.7.22","v2.0.0-rc.5","v1.7.21","api/v1.8.0-rc.3","v2.0.0-rc.4","v1.7.20","v1.7.19","api/v1.7.19","v2.0.0-rc.3","v1.7.18","api/v1.8.0-rc.2","api/v1.8.0-rc.1","v1.7.17","v2.0.0-rc.2","api/v1.8.0-rc.0","v1.7.16","v2.0.0-rc.1","v1.7.15","v1.7.14","v2.0.0-rc.0","v1.7.11","v1.7.13","v2.0.0-beta.2","v1.7.12","v2.0.0-beta.1","v1.7.10","v1.7.9","v2.0.0-beta.0","v1.7.8","v1.7.7","v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v1.7.1","v1.7.0","v1.7.0-rc.3","v1.7.0-rc.2","v1.7.0-rc.1","v1.7.0-rc.0","v1.7.0-beta.4","v1.7.0-beta.3","v1.7.0-beta.2","v1.7.0-beta.1","v1.7.0-beta.0","v1.6.0-rc.3","v1.6.0","v1.6.0-rc.4","v1.6.0-rc.2","v1.6.0-rc.1","v1.6.0-rc.0","v1.6.0-beta.5","v1.6.0-beta.4","v1.6.0-beta.3","api/v1.6.0-beta.3","v1.6.0-beta.2","api/v1.6.0-beta.2","v1.6.0-beta.1","api/v1.6.0-beta.1","v1.6.0-beta.0","v1.5.0","v1.5.0-rc.3","v1.5.0-rc.2","v1.5.0-rc.1","v1.5.0-rc.0","v1.5.0-beta.4","v1.5.0-beta.3","v1.5.0-beta.2","v1.5.0-beta.1","v1.5.0-beta.0","v1.4.0","v1.4.0-rc.1","v1.4.0-rc.0","v1.4.0-beta.2","v1.4.0-beta.1","v1.4.0-beta.0","v1.3.0","v1.3.0-rc.3","v1.3.0-rc.2","v1.3.0-rc.1","v1.3.0-rc.0","v1.3.0-beta.2","v1.3.0-beta.1","v1.3.0-beta.0","v1.2.0","v1.2.0-rc.2","v1.2.0-rc.1","v1.2.0-rc.0","v1.2.0-beta.2","v1.2.0-beta.1","v1.2.0-beta.0","v1.1.0","v1.1.0-rc.2","v1.1.0-rc.1","v1.1.0-rc.0","v1.0.0","v1.0.0-rc.0","v1.0.0-beta.3","v1.0.0-beta.2","v1.0.0-beta.1","v1.0.0-beta.0","v1.0.0-alpha6","v1.0.0-alpha5","v1.0.0-alpha4","v1.0.0-alpha3","v1.0.0-alpha2","v1.0.0-alpha1","v1.0.0-alpha0","v0.2.0","0.0.5","0.0.4","0.0.3","0.0.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/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"}]}