{"id":"CLEANSTART-2026-FQ51305","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":"CVE-2026-39834 affects multiple packages. 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. See references for individual vulnerability details.","modified":"2026-10-31T16:02:32.778158383Z","published":"2026-10-31T13:31:19.605630Z","upstream":["CVE-2026-39834"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-FQ51305.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":"consul-k8s","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/consul-k8s"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.13-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"consul","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/consul"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.22.7-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"consul","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/consul"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.22.7-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"step-cli","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/step-cli"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.28.7-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"prometheus-alertmanager-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/prometheus-alertmanager-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.32.0-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"traefik","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/traefik"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.41-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"nodetaint","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/nodetaint"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0.4-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"victoria-metrics","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/victoria-metrics?arch=x86_64"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.145.0-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"victoria-metrics","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/victoria-metrics?arch=aarch64"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.145.0-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"grafana","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/grafana"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"12.4.3-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"consul","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/consul"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.0-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"grafana","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/grafana"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"13.0.1-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"etcd","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/etcd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.9-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-FQ51305.json"}},{"package":{"name":"grafana","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/grafana"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed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