{"id":"UBUNTU-CVE-2021-39947","details":"In specific circumstances, trace file buffers in GitLab Runner versions up to 14.3.4, 14.4 to 14.4.2, and 14.5 to 14.5.2 would re-use the file descriptor 0 for multiple traces and mix the output of several jobs","modified":"2025-10-24T04:50:33Z","published":"2022-06-06T17:15:00Z","upstream":["CVE-2021-39947"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-39947"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-39947"}],"affected":[{"package":{"name":"gitlab-ci-multi-runner","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/gitlab-ci-multi-runner@10.5.0+dfsg-2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.2+dfsg-1","10.5.0+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"gitlab-runner","binary_version":"10.5.0+dfsg-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-39947.json"}},{"package":{"name":"gitlab-ci-multi-runner","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/gitlab-ci-multi-runner@11.2.0+dfsg-2ubuntu1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["11.2.0+dfsg-2ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"gitlab-runner","binary_version":"11.2.0+dfsg-2ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-39947.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}