{"id":"CVE-2017-17807","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-17807","generatedAt":"2026-10-28T20:11:47.309Z","title":"The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's \"default request-key keyring\" via the request_key() system call, allowing a local user to use a sequence of crafted system calls…","description":"The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's \"default request-key keyring\" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.","published":"2017-12-20T23:29:00.000Z","lastModified":"2026-06-17T01:11:41.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":3.3,"severity":"LOW","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},"cwe":["CWE-862"],"affected":["linux/linux kernel"],"epss":{"score":0.00437,"percentile":0.37816,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b","tags":["Issue Tracking","Patch"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/102301","tags":["Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b","tags":["Issue Tracking","Patch"],"source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3617-1/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3617-2/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3617-3/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3619-1/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3619-2/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3620-1/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3620-2/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3632-1/","source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2017/dsa-4073","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2018/dsa-4082","source":"cve@mitre.org"},{"url":"https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6","tags":["Issue Tracking","Mailing List","Release Notes"],"source":"cve@mitre.org"},{"url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b","tags":["Issue Tracking","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/102301","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b","tags":["Issue Tracking","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3617-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3617-2/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3617-3/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3619-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3619-2/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3620-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3620-2/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3632-1/","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","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6","tags":["Issue Tracking","Mailing List","Release Notes"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-17807","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."}