{"id":"CVE-2017-17806","details":"The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the underlying cryptographic hash algorithm is unkeyed, allowing a local attacker able to use the AF_ALG-based hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3) to cause a kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing SHA-3 initialization.","modified":"2026-03-12T22:36:33.984493Z","published":"2017-12-20T23:29:00.377Z","related":["SUSE-SU-2018:0010-1","SUSE-SU-2018:0011-1","SUSE-SU-2018:0012-1","SUSE-SU-2018:0040-1","SUSE-SU-2018:0180-1","SUSE-SU-2018:0213-1","SUSE-SU-2018:0437-1","SUSE-SU-2018:0525-1"],"references":[{"type":"ADVISORY","url":"https://usn.ubuntu.com/3617-3/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2017/dsa-4073"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3617-2/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3619-2/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3583-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3617-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3632-1/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:2948"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3583-2/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3619-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4082"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/102293"},{"type":"REPORT","url":"http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html"},{"type":"REPORT","url":"https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8"},{"type":"FIX","url":"http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1"},{"type":"FIX","url":"http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html"},{"type":"FIX","url":"http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html"},{"type":"FIX","url":"http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"3.2.97"}]},{"events":[{"introduced":"3.3"},{"fixed":"3.16.52"}]},{"events":[{"introduced":"3.17"},{"fixed":"3.18.89"}]},{"events":[{"introduced":"3.19"},{"fixed":"4.1.49"}]},{"events":[{"introduced":"4.2"},{"fixed":"4.4.107"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.71"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.8"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"42.2"}]},{"events":[{"introduced":"0"},{"last_affected":"42.3"}]},{"events":[{"introduced":"0"},{"last_affected":"12-sp2"}]},{"events":[{"introduced":"0"},{"last_affected":"12-sp3"}]},{"events":[{"introduced":"0"},{"last_affected":"11-extra"}]},{"events":[{"introduced":"0"},{"last_affected":"11-sp4"}]},{"events":[{"introduced":"0"},{"last_affected":"12-sp2"}]},{"events":[{"introduced":"0"},{"last_affected":"12-sp3"}]},{"events":[{"introduced":"0"},{"last_affected":"12-sp2"}]},{"events":[{"introduced":"0"},{"last_affected":"12.04"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"17.10"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2017-17806.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}