{"id":"CVE-2017-16995","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-16995","generatedAt":"2026-10-28T21:18:46.677Z","title":"The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.","description":"The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.","published":"2017-12-27T17:08:18.000Z","lastModified":"2026-06-17T01:10:14.000Z","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-119"],"affected":["linux/linux kernel","debian/debian linux","canonical/ubuntu linux"],"epss":{"score":0.30052,"percentile":0.982,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":3,"verified":true,"firstPublished":"2018-03-16","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":45058,"kind":"exploit","title":"Linux - BPF Sign Extension Local Privilege Escalation (Metasploit)","url":"https://www.exploit-db.com/exploits/45058","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/local/45058.rb","file":"exploits/linux/local/45058.rb","published":"2018-07-19","added":"2018-07-19","updated":"2018-07-19","author":"Metasploit","type":"local","platform":"linux","port":null,"verified":true,"codes":["CVE-2017-16995"],"tags":"Local","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://raw.githubusercontent.com/rapid7/metasploit-framework/70a1df70a17e5d72f72f502cc430be1f64888ad4/modules/exploits/linux/local/bpf_sign_extension_priv_esc.rb"},{"edbId":45010,"kind":"exploit","title":"Linux Kernel < 4.13.9 (Ubuntu 16.04 / Fedora 27) - Local Privilege Escalation","url":"https://www.exploit-db.com/exploits/45010","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/local/45010.c","file":"exploits/linux/local/45010.c","published":"2018-07-10","added":"2018-07-12","updated":"2018-11-17","author":"rlarabee","type":"local","platform":"linux","port":null,"verified":true,"codes":["CVE-2017-16995"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://github.com/rlarabee/exploits/blob/db64753f2335a01825f78d66665adfff3670653e/cve-2017-16995/cve-2017-16995.c"},{"edbId":44298,"kind":"exploit","title":"Linux Kernel < 4.4.0-116 (Ubuntu 16.04.4) - Local Privilege Escalation","url":"https://www.exploit-db.com/exploits/44298","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/local/44298.c","file":"exploits/linux/local/44298.c","published":"2018-03-16","added":"2018-03-19","updated":"2018-03-19","author":"Bruce Leidl","type":"local","platform":"linux","port":null,"verified":false,"codes":["CVE-2017-16995"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"http://cyseclabs.com/pub/upstream44.c"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 30.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762e2c8c942780948091f8f2a4f32fce1ac6f","tags":["Vendor Advisory"],"source":"security@debian.org"},{"url":"http://openwall.com/lists/oss-security/2017/12/21/2","tags":["Mailing List","Third Party Advisory"],"source":"security@debian.org"},{"url":"http://www.securityfocus.com/bid/102288","tags":["Third Party Advisory","VDB Entry"],"source":"security@debian.org"},{"url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1454","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=a6132276ab5dcc38b3299082efeb25b948263adb","tags":["Vendor Advisory"],"source":"security@debian.org"},{"url":"https://github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6f","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://usn.ubuntu.com/3619-1/","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://usn.ubuntu.com/3619-2/","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://usn.ubuntu.com/3633-1/","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://usn.ubuntu.com/usn/usn-3523-2/","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://www.debian.org/security/2017/dsa-4073","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://www.exploit-db.com/exploits/44298/","tags":["Third Party Advisory","VDB Entry"],"source":"security@debian.org"},{"url":"https://www.exploit-db.com/exploits/45010/","tags":["Third Party Advisory","VDB Entry"],"source":"security@debian.org"},{"url":"https://www.exploit-db.com/exploits/45058/","tags":["Third Party Advisory","VDB Entry"],"source":"security@debian.org"},{"url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762e2c8c942780948091f8f2a4f32fce1ac6f","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://openwall.com/lists/oss-security/2017/12/21/2","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/102288","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1454","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=a6132276ab5dcc38b3299082efeb25b948263adb","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6f","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3619-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3619-2/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3633-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/usn/usn-3523-2/","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.exploit-db.com/exploits/44298/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/45010/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/45058/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-16995","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."}