{"id":"UBUNTU-CVE-2022-2652","details":"Depending on the way the format strings in the card label are crafted it's possible to leak kernel stack memory. There is also the possibility for DoS due to the v4l2loopback kernel module crashing when providing the card label on request (reproduce e.g. with many %s modifiers in a row).","modified":"2026-05-20T16:07:56.582320464Z","published":"2022-08-04T10:15:00Z","upstream":["CVE-2022-2652"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-2652"},{"type":"REPORT","url":"https://huntr.dev/bounties/1b055da5-7a9e-4409-99d7-030280d242d5"},{"type":"REPORT","url":"https://github.com/umlaeute/v4l2loopback/commit/e4cd225557486c420f6a34411f98c575effd43dd"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-2652"}],"affected":[{"package":{"name":"v4l2loopback","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/v4l2loopback?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.0-4ubuntu2","0.9.1-4","0.9.1-4ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.9.1-4ubuntu0.1","binary_name":"v4l2loopback-dkms"},{"binary_name":"v4l2loopback-source","binary_version":"0.9.1-4ubuntu0.1"},{"binary_name":"v4l2loopback-utils","binary_version":"0.9.1-4ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-2652.json"}},{"package":{"name":"v4l2loopback","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/v4l2loopback?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.0-1","0.10.0-1ubuntu1","0.10.0-1ubuntu1.1","0.10.0-1ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_name":"v4l2loopback-dkms","binary_version":"0.10.0-1ubuntu1.2"},{"binary_name":"v4l2loopback-source","binary_version":"0.10.0-1ubuntu1.2"},{"binary_version":"0.10.0-1ubuntu1.2","binary_name":"v4l2loopback-utils"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-2652.json"}},{"package":{"name":"v4l2loopback","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/v4l2loopback?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.2-1","0.12.3-1","0.12.3-1ubuntu0.1","0.12.3-1ubuntu0.2","0.12.3-1ubuntu0.3","0.12.3-1ubuntu0.4"],"ecosystem_specific":{"binaries":[{"binary_name":"v4l2loopback-dkms","binary_version":"0.12.3-1ubuntu0.4"},{"binary_version":"0.12.3-1ubuntu0.4","binary_name":"v4l2loopback-source"},{"binary_name":"v4l2loopback-utils","binary_version":"0.12.3-1ubuntu0.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-2652.json"}},{"package":{"name":"v4l2loopback","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/v4l2loopback?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.5-1ubuntu3","0.12.5-1ubuntu4","0.12.5-1ubuntu5","0.12.7-2ubuntu2~22.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.12.7-2ubuntu2~22.04.1","binary_name":"v4l2loopback-dkms"},{"binary_name":"v4l2loopback-source","binary_version":"0.12.7-2ubuntu2~22.04.1"},{"binary_version":"0.12.7-2ubuntu2~22.04.1","binary_name":"v4l2loopback-utils"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-2652.json"}},{"package":{"name":"v4l2loopback","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/v4l2loopback?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.7-2ubuntu4","0.12.7-2ubuntu5","0.12.7-2ubuntu5.1"],"ecosystem_specific":{"binaries":[{"binary_name":"v4l2loopback-dkms","binary_version":"0.12.7-2ubuntu5.1"},{"binary_version":"0.12.7-2ubuntu5.1","binary_name":"v4l2loopback-source"},{"binary_name":"v4l2loopback-utils","binary_version":"0.12.7-2ubuntu5.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-2652.json"}},{"package":{"name":"v4l2loopback","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/v4l2loopback?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13.2-1ubuntu1","0.15.0-0ubuntu1","0.15.0-0ubuntu2","0.15.0-0ubuntu2.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.15.0-0ubuntu2.1","binary_name":"v4l2loopback-dkms"},{"binary_name":"v4l2loopback-source","binary_version":"0.15.0-0ubuntu2.1"},{"binary_name":"v4l2loopback-utils","binary_version":"0.15.0-0ubuntu2.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-2652.json"}},{"package":{"name":"v4l2loopback","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/v4l2loopback?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.15.0-0ubuntu2","0.15.3-1ubuntu1","0.15.3-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.15.3-1ubuntu2","binary_name":"v4l2loopback-dkms"},{"binary_name":"v4l2loopback-source","binary_version":"0.15.3-1ubuntu2"},{"binary_version":"0.15.3-1ubuntu2","binary_name"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