{"id":"CLEANSTART-2026-UG93832","summary":"When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty pa...","details":"Security vulnerability affects the containerd package. When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress.","modified":"2026-10-01T03:00:33.908884244Z","published":"2026-09-30T19:48:01.534394Z","upstream":["CVE-2026-39834"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-UG93832.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-39834"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39834"}],"affected":[{"package":{"name":"containerd","ecosystem":"CleanStart"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.3-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-UG93832.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:N/I:H/A:H"}]}