{"id":"CVE-2017-8824","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-8824","generatedAt":"2026-10-29T00:48:34.007Z","title":"The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN state.","description":"The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN state.","published":"2017-12-05T09:29:00.000Z","lastModified":"2026-06-17T01:27:02.000Z","status":"Modified","sourceIdentifier":"security@debian.org","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"],"epss":{"score":0.01344,"percentile":0.71229,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2017-12-07","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":43234,"kind":"exploit","title":"Linux Kernel 4.10.5 / < 4.14.3 (Ubuntu) - DCCP Socket Use-After-Free","url":"https://www.exploit-db.com/exploits/43234","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/43234.c","file":"exploits/linux/dos/43234.c","published":"2017-12-07","added":"2017-12-07","updated":"2017-12-08","author":"Mohamed Ghannam","type":"dos","platform":"linux","port":null,"verified":true,"codes":["CVE-2017-8824"],"tags":"Denial of Service (DoS)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"http://www.openwall.com/lists/oss-security/2017/12/05/1"}]},"verdict":{"level":"urgent","text":"A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 1.3%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"http://lists.openwall.net/netdev/2017/12/04/224","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"http://www.openwall.com/lists/oss-security/2017/12/05/1","tags":["Mailing List","Third Party Advisory"],"source":"security@debian.org"},{"url":"http://www.securityfocus.com/bid/102056","tags":["Third Party Advisory","VDB Entry"],"source":"security@debian.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:0399","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:0676","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:1062","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:1130","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:1170","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:1216","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:1319","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://access.redhat.com/errata/RHSA-2018:3822","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html","tags":["Third Party 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Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:1062","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:1130","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:1170","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:1216","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:1319","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:3822","tags":["Third Party 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Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3583-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3583-2/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2017/dsa-4073","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2018/dsa-4082","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/43234/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-8824","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."}