high 7.8

CVE-2017-8824 json

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…

published 2017-12-05 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-17767

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits: 1; Exploit-DB

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.

Patch / fix

fixed in 1 distros 6

linux linux_kernel 3.2.97, 3.16.52, 3.18.95, 4.1.50, 4.4.116, 4.9.82, 4.14.20

debian ubuntu red hat suse opensuse arch linux

linux Debian 14, Debian 13, Debian 12 4.14.7-1

debian advisories DEBIAN-CVE-2017-8824

linux Ubuntu 14.04 LTS 3.13.0-142.191
linux Ubuntu 16.04 LTS 4.4.0-116.140
linux-aws Ubuntu 14.04 LTS 4.4.0-1014.14
linux-aws Ubuntu 16.04 LTS 4.4.0-1052.61
linux-gcp Ubuntu 16.04 LTS 4.13.0-1011.15
linux-hwe Ubuntu 16.04 LTS 4.13.0-41.46~16.04.1
linux-kvm Ubuntu 16.04 LTS 4.4.0-1019.24
linux-oem Ubuntu 16.04 LTS 4.13.0-1021.23

ubuntu advisories UBUNTU-CVE-2017-8824

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel RHEL 7 3.10.0-862.el7
perf RHEL 7 3.10.0-862.el7
python-perf RHEL 7 3.10.0-862.el7
kernel-kdump RHEL 7 3.10.0-862.el7
kernel-tools RHEL 7 3.10.0-862.el7
kernel-tools-libs RHEL 7 3.10.0-862.el7
kernel-bootwrapper RHEL 7 3.10.0-862.el7
kernel-abi-whitelists RHEL 7 3.10.0-862.el7

red hat advisories RHSA-2018:1062 RHSA-2018:1319 RHSA-2018:3822 RHSA-2018:1170 RHSA-2018:1130 RHSA-2018:1216

kernel-rt SLE Real Time 12 SP2 4.4.104-24.1
kernel-syms-rt SLE Real Time 12 SP2 4.4.104-24.1
kernel-rt_debug SLE Real Time 12 SP2 4.4.104-24.1
kernel-source-rt SLE Real Time 12 SP2 4.4.104-24.1
kernel-rt SLE Real Time 11 SP4 3.0.101.rt130-69.14.1
kernel-syms-rt SLE Real Time 11 SP4 3.0.101.rt130-69.14.1
kernel-rt_trace SLE Real Time 11 SP4 3.0.101.rt130-69.14.1
kernel-source-rt SLE Real Time 11 SP4 3.0.101.rt130-69.14.1

suse advisories SUSE-SU-2018:0213-1 SUSE-SU-2018:0180-1 SUSE-SU-2018:0115-1 SUSE-SU-2018:0040-1 SUSE-SU-2018:0031-1 SUSE-SU-2018:0011-1

kernel-source openSUSE Tumbleweed 5.14.6-1.4
kernel-source openSUSE Tumbleweed 6.6.17-1.1

opensuse advisories openSUSE-SU-2024:10728-1 openSUSE-SU-2024:13704-1

linux Arch Linux 4.14.11-1
linux-lts Arch Linux 4.9.82-1
linux-zen Arch Linux 4.14.11-1
linux-hardened Arch Linux 4.14.11.a-1

arch linux advisories AVG-552 AVG-566 AVG-571 AVG-574

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-8824 updated 2026-06-28 cvss 7.8

kernel: Use-after-free vulnerability in DCCP socket

Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-862.el7, kernel 3.10.0-862.el7, python-perf 3.10.0-862.el7, kernel-tools 3.10.0-862.el7, kernel-tools-libs 3.10.0-862.el7, kernel-abi-whitelists 3.10.0-862.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-862.el7, kernel 3.10.0-862.el7, python-perf 3.10.0-862.el7, kernel-tools 3.10.0-862.el7, kernel-tools-libs 3.10.0-862.el7, kernel-abi-whitelists 3.10.0-862.el7, +1 more
fixed: vendor fix RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) perf 3.10.0-514.44.1.el7, kernel 3.10.0-514.44.1.el7, python-perf 3.10.0-514.44.1.el7, kernel-tools 3.10.0-514.44.1.el7, kernel-tools-libs 3.10.0-514.44.1.el7, kernel-abi-whitelists 3.10.0-514.44.1.el7, +1 more
fixed: vendor fix RHSA-2018:0399
Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) perf 3.10.0-693.25.2.el7, kernel 3.10.0-693.25.2.el7, python-perf 3.10.0-693.25.2.el7, kernel-tools 3.10.0-693.25.2.el7, kernel-tools-libs 3.10.0-693.25.2.el7, kernel-abi-whitelists 3.10.0-693.25.2.el7, +1 more
fixed: vendor fix RHSA-2018:1130
Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.el7
fixed: vendor fix RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) kernel-debuginfo-common-x86_64 3.10.0-514.44.1.el7
fixed: vendor fix RHSA-2018:0399
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.25.2.el7
fixed: vendor fix RHSA-2018:1130
Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-696.28.1.el6, kernel 2.6.32-696.28.1.el6, kernel-firmware 2.6.32-696.28.1.el6, kernel-abi-whitelists 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6
fixed: vendor fix RHSA-2018:1319
Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-862.rt56.804.el7, kernel-rt-trace 3.10.0-862.rt56.804.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-862.rt56.804.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-862.rt56.804.el7, kernel-rt-kvm 3.10.0-862.rt56.804.el7, kernel-rt-trace 3.10.0-862.rt56.804.el7, kernel-rt-debug-kvm 3.10.0-862.rt56.804.el7, kernel-rt-trace-kvm 3.10.0-862.rt56.804.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-862.rt56.804.el7
fixed: vendor fix RHSA-2018:0676

show 19 more

Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-696.28.1.el6, kernel 2.6.32-696.28.1.el6, kernel-firmware 2.6.32-696.28.1.el6, kernel-abi-whitelists 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6
fixed: vendor fix RHSA-2018:1319
Red Hat Enterprise Linux Server (v. 5 ELS) kernel 2.6.18-436.el5, kernel-PAE 2.6.18-436.el5, kernel-xen 2.6.18-436.el5, kernel-kdump 2.6.18-436.el5, kernel-debuginfo-common 2.6.18-436.el5
fixed: vendor fix RHSA-2018:3822
Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-696.28.1.el6, kernel 2.6.32-696.28.1.el6, kernel-kdump 2.6.32-696.28.1.el6, kernel-firmware 2.6.32-696.28.1.el6, kernel-bootwrapper 2.6.32-696.28.1.el6, kernel-abi-whitelists 2.6.32-696.28.1.el6, +4 more
fixed: vendor fix RHSA-2018:1319
Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-862.el7, kernel 3.10.0-862.el7, python-perf 3.10.0-862.el7, kernel-kdump 3.10.0-862.el7, kernel-tools 3.10.0-862.el7, kernel-tools-libs 3.10.0-862.el7, +6 more
fixed: vendor fix RHSA-2018:1062
Red Hat Enterprise Linux Server AUS (v. 7.2) perf 3.10.0-327.66.1.el7, kernel 3.10.0-327.66.1.el7, python-perf 3.10.0-327.66.1.el7, kernel-tools 3.10.0-327.66.1.el7, kernel-tools-libs 3.10.0-327.66.1.el7, kernel-abi-whitelists 3.10.0-327.66.1.el7, +1 more Red Hat Enterprise Linux Server E4S (v. 7.2) perf 3.10.0-327.66.1.el7, kernel 3.10.0-327.66.1.el7, python-perf 3.10.0-327.66.1.el7, kernel-tools 3.10.0-327.66.1.el7, kernel-tools-libs 3.10.0-327.66.1.el7, kernel-abi-whitelists 3.10.0-327.66.1.el7, +1 more
fixed: vendor fix RHSA-2018:1216
Red Hat Enterprise Linux Server EUS (v. 7.3) perf 3.10.0-514.44.1.el7, kernel 3.10.0-514.44.1.el7, python-perf 3.10.0-514.44.1.el7, kernel-kdump 3.10.0-514.44.1.el7, kernel-tools 3.10.0-514.44.1.el7, kernel-tools-libs 3.10.0-514.44.1.el7, +6 more
fixed: vendor fix RHSA-2018:0399
Red Hat Enterprise Linux Server EUS (v. 7.4) perf 3.10.0-693.25.2.el7, kernel 3.10.0-693.25.2.el7, python-perf 3.10.0-693.25.2.el7, kernel-kdump 3.10.0-693.25.2.el7, kernel-tools 3.10.0-693.25.2.el7, kernel-tools-libs 3.10.0-693.25.2.el7, +6 more
fixed: vendor fix RHSA-2018:1130
Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-ppc64 2.6.32-696.28.1.el6, kernel-debuginfo-common-s390x 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6
fixed: vendor fix RHSA-2018:1319
Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-862.el7, kernel-debuginfo-common-x86_64 3.10.0-862.el7, kernel-debuginfo-common-ppc64le 3.10.0-862.el7
fixed: vendor fix RHSA-2018:1062
Red Hat Enterprise Linux Server Optional AUS (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.66.1.el7 Red Hat Enterprise Linux Server Optional E4S (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.66.1.el7
fixed: vendor fix RHSA-2018:1216
Red Hat Enterprise Linux Server Optional EUS (v. 7.3) kernel-debuginfo-common-ppc64 3.10.0-514.44.1.el7, kernel-debuginfo-common-x86_64 3.10.0-514.44.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-514.44.1.el7
fixed: vendor fix RHSA-2018:0399
Red Hat Enterprise Linux Server Optional EUS (v. 7.4) kernel-debuginfo-common-ppc64 3.10.0-693.25.2.el7, kernel-debuginfo-common-x86_64 3.10.0-693.25.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.25.2.el7
fixed: vendor fix RHSA-2018:1130
Red Hat Enterprise Linux Server Optional TUS (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.66.1.el7 Red Hat Enterprise Linux Server TUS (v. 7.2) perf 3.10.0-327.66.1.el7, kernel 3.10.0-327.66.1.el7, python-perf 3.10.0-327.66.1.el7, kernel-tools 3.10.0-327.66.1.el7, kernel-tools-libs 3.10.0-327.66.1.el7, kernel-abi-whitelists 3.10.0-327.66.1.el7, +1 more
fixed: vendor fix RHSA-2018:1216
Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-696.28.1.el6, kernel 2.6.32-696.28.1.el6, kernel-firmware 2.6.32-696.28.1.el6, kernel-abi-whitelists 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6
fixed: vendor fix RHSA-2018:1319
Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-862.el7, kernel 3.10.0-862.el7, python-perf 3.10.0-862.el7, kernel-tools 3.10.0-862.el7, kernel-tools-libs 3.10.0-862.el7, kernel-abi-whitelists 3.10.0-862.el7, +1 more
fixed: vendor fix RHSA-2018:1062
Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-696.28.1.el6, kernel-debuginfo-common-i686 2.6.32-696.28.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.28.1.el6
fixed: vendor fix RHSA-2018:1319
Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-862.el7
fixed: vendor fix RHSA-2018:1062
Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-trace 3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-vanilla 3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-firmware 3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.25.2.rt56.612.el6rt
fixed: vendor fix RHSA-2018:1170
Red Hat Enterprise Linux 7 perf, kernel, kernel-alt, python-perf, kernel-kdump, kernel-tools, +3 more
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

2017-12-05 Published
2017-12-07 First public exploit (EDB-43234)

Exploit prediction

1.34% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-43234 Linux Kernel 4.10.5 / < 4.14.3 (Ubuntu) - DCCP Socket Use-After-Free dos, 2017-12-07

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

n/a Linux kernel through 4.14.3

Classification

Weakness

CWE-416 Use After Free

Technology feeds

Linux kernel rss critical rss

References

exploit-db.com /exploits/43234/
exploit, third-party-advisory, vdb-entry
debian.org /security/2018/dsa-4082
vendor-advisory, third-party-advisory
usn.ubuntu.com /3583-2/
vendor-advisory, third-party-advisory
lists.opensuse.org /opensuse-security-announce/2018-01/msg00007.html
vendor-advisory, third-party-advisory
usn.ubuntu.com /3582-1/
vendor-advisory, third-party-advisory
access.redhat.com /errata/RHSA-2018:1062
vendor-advisory, third-party-advisory
access.redhat.com /errata/RHSA-2018:1319
vendor-advisory, third-party-advisory
usn.ubuntu.com /3583-1/
vendor-advisory, third-party-advisory
access.redhat.com /errata/RHSA-2018:0676
vendor-advisory, third-party-advisory
access.redhat.com /errata/RHSA-2018:1216
vendor-advisory, third-party-advisory
usn.ubuntu.com /3581-1/
vendor-advisory, third-party-advisory
usn.ubuntu.com /3581-3/
vendor-advisory, third-party-advisory
access.redhat.com /errata/RHSA-2018:1170
vendor-advisory, third-party-advisory
usn.ubuntu.com /3581-2/
vendor-advisory, third-party-advisory
access.redhat.com /errata/RHSA-2018:1130
vendor-advisory, third-party-advisory
access.redhat.com /errata/RHSA-2018:0399
vendor-advisory, third-party-advisory
debian.org /security/2017/dsa-4073
vendor-advisory, third-party-advisory
access.redhat.com /errata/RHSA-2018:3822
vendor-advisory, third-party-advisory
usn.ubuntu.com /3582-2/
vendor-advisory, third-party-advisory
lists.debian.org /debian-lts-announce/2017/12/msg00004.html
mailing-list, third-party-advisory
help.ecostruxureit.com /display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
third-party-advisory
securityfocus.com /bid/102056
vdb-entry, third-party-advisory
lists.openwall.net /netdev/2017/12/04/224
third-party-advisory
openwall.com /lists/oss-security/2017/12/05/1
mailing-list, third-party-advisory

Sources

CVE List CVE-2017-8824
NVD CVE-2017-8824

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary