{"id":"CVE-2019-8956","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-8956","generatedAt":"2026-10-27T23:26:44.504Z","title":"In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in the \"sctp_sendmsg()\" function (net/sctp/socket.c) when handling SCTP_SENDALL flag can be exploited to corrupt memory.","description":"In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in the \"sctp_sendmsg()\" function (net/sctp/socket.c) when handling SCTP_SENDALL flag can be exploited to corrupt memory.","published":"2019-04-01T19:29:01.000Z","lastModified":"2026-06-17T02:42:51.000Z","status":"Modified","sourceIdentifier":"PSIRT-CNA@flexerasoftware.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","CWE-787"],"affected":["linux/linux kernel","canonical/ubuntu linux"],"epss":{"score":0.01129,"percentile":0.66161,"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 (1.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21","tags":["Release Notes","Vendor Advisory"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.8","tags":["Release Notes","Vendor Advisory"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=ba59fb0273076637f0add4311faa990a5eec27c0","tags":["Mailing List","Patch","Vendor Advisory"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://secuniaresearch.flexerasoftware.com/secunia_research/2019-5/","tags":["Broken Link"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://support.f5.com/csp/article/K12671141","tags":["Third Party Advisory"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://usn.ubuntu.com/3930-1/","tags":["Third Party Advisory"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://usn.ubuntu.com/3930-2/","tags":["Third Party Advisory"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.8","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=ba59fb0273076637f0add4311faa990a5eec27c0","tags":["Mailing List","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://secuniaresearch.flexerasoftware.com/secunia_research/2019-5/","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.f5.com/csp/article/K12671141","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3930-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3930-2/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-8956","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."}