CVE-2017-17806

7.8 HIGH
Published: December 20, 2017 Modified: May 13, 2026
View on NVD

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1
Source: cve@mitre.org
Patch
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html
Source: cve@mitre.org
Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
Source: cve@mitre.org
Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html
Source: cve@mitre.org
Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html
Source: cve@mitre.org
Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html
Source: cve@mitre.org
Issue Tracking Third Party Advisory
http://www.securityfocus.com/bid/102293
Source: cve@mitre.org
Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:2948
Source: cve@mitre.org
Third Party Advisory
https://github.com/torvalds/linux/commit/af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1
Source: cve@mitre.org
Patch
https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3583-1/
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3583-2/
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3617-1/
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3617-2/
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3617-3/
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3619-1/
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3619-2/
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3632-1/
Source: cve@mitre.org
Third Party Advisory
https://www.debian.org/security/2017/dsa-4073
Source: cve@mitre.org
Third Party Advisory
https://www.debian.org/security/2018/dsa-4082
Source: cve@mitre.org
Third Party Advisory
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8
Source: cve@mitre.org
Issue Tracking Release Notes
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Third Party Advisory
http://www.securityfocus.com/bid/102293
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:2948
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://github.com/torvalds/linux/commit/af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3583-1/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3583-2/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3617-1/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3617-2/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3617-3/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3619-1/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3619-2/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3632-1/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.debian.org/security/2017/dsa-4073
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.debian.org/security/2018/dsa-4082
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Release Notes

42 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.8 / 10.0
EPSS (Exploit Probability)
0.6%
42th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-787

Affected Vendors

opensuse debian canonical opensuse_project suse linux

Related CVEs

CVE-2026-6688 7.6
CVE-2026-6687 7.6
CVE-2026-6686 4.6
CVE-2026-6685 6.1
CVE-2026-6684 4.6