CVE-2017-8824

Exp

The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN state.

Published: 2017-12-05 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-8824 is rated High Exploit Risk (70.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.35%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2017-8824

EDB-ID Source Kind Published Link
43234 exploit_db edb 2017-12-07 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2017-8824

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.85% 1.35% +0.50%
2 2026-03-02 0.79% 0.85% +0.06%
3 2025-11-21 — 0.79% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-8824

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2017-8824

OS Trackers for CVE-2017-8824

vendor priority summary link
debian not yet assigned CVE-2017-8824 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-8824
redhat high — https://access.redhat.com/security/cve/CVE-2017-8824
suse high CVE-2017-8824 severity important: SUSE including 248 source package names (cluster-md-kmp-default-4.12.14-120.1, cluster-md-kmp-default-4.4.103-6.33.1, …), 535 product×package rows across 81 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (81 product lines)): Fixed 359, Known Not Affected 176. https://www.suse.com/security/cve/CVE-2017-8824/
ubuntu medium CVE-2017-8824 medium priority: Ubuntu including 79 source packages (linux, linux-aws, …), 654 status rows across 11 suites (artful, bionic, cosmic, focal, jammy, noble, oracular, trusty, upstream, xenial, zesty): DNE 425, not-affected 119, released 96, ignored 14. https://ubuntu.com/security/CVE-2017-8824

Affected software / configurations for CVE-2017-8824

Vendor Product Version Raw CPE
linux linux_kernel >= 2.6.14, < 3.2.97 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.3, < 3.16.52 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.17, < 3.18.95 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 3.19, < 4.1.50 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.2, < 4.4.116 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.5, < 4.9.82 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.10, < 4.14.20 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

References for CVE-2017-8824

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html Third Party Advisory
http://lists.openwall.net/netdev/2017/12/04/224 Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/12/05/1 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/102056 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0399 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0676 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1062 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1130 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1170 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1216 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1319 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3822 Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html Third Party Advisory
https://usn.ubuntu.com/3581-1/ Third Party Advisory
https://usn.ubuntu.com/3581-2/ Third Party Advisory
https://usn.ubuntu.com/3581-3/ Third Party Advisory
https://usn.ubuntu.com/3582-1/ Third Party Advisory
https://usn.ubuntu.com/3582-2/ Third Party Advisory
https://usn.ubuntu.com/3583-1/ Third Party Advisory
https://usn.ubuntu.com/3583-2/ Third Party Advisory
https://www.debian.org/security/2017/dsa-4073 Third Party Advisory
https://www.debian.org/security/2018/dsa-4082 Third Party Advisory
https://www.exploit-db.com/exploits/43234/ Exploit Third Party Advisory VDB Entry
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