{"id":"CVE-2020-16119","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-16119","generatedAt":"2026-10-27T21:21:13.398Z","title":"Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released.","description":"Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.","published":"2021-01-14T01:15:13.000Z","lastModified":"2026-06-17T02:57:44.000Z","status":"Modified","sourceIdentifier":"security@ubuntu.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["linux/linux kernel","canonical/ubuntu linux","debian/debian linux"],"epss":{"score":0.00427,"percentile":0.36708,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695","tags":["Patch","Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://launchpad.net/bugs/1883840","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html","tags":["Mailing List","Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/","source":"security@ubuntu.com"},{"url":"https://security.netapp.com/advisory/ntap-20210304-0006/","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/USN-4576-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/USN-4577-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/USN-4578-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/USN-4579-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://ubuntu.com/USN-4580-1","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://www.debian.org/security/2021/dsa-4978","tags":["Third Party Advisory"],"source":"security@ubuntu.com"},{"url":"https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://launchpad.net/bugs/1883840","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20210304-0006/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/USN-4576-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/USN-4577-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/USN-4578-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/USN-4579-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ubuntu.com/USN-4580-1","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2021/dsa-4978","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-16119","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}