CVE-2017-8824

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
7.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Exploit-DB (verified), public exploit)
CISA-KEV: Not listedEPSS PROB: 1.3%CVSS: 7.8Exploit: Exploit-DB (verified) · public exploitExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
66
EG Risk 66/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation65% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.3%
EPSS %ILE
70th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

December 5, 2017

Last Modified

June 17, 2026

Advisory Details (9)

Auto-updated Sep 30, 2026
🔬 Proof of concept available. Patch available. Sources: redhat.
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat

https://access.redhat.com/errata/RHSA-2018:1216
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2018:1170
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.4 Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:1130
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2018:1062
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2018:0676
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.3 Extended Update Support.

https://access.redhat.com/errata/RHSA-2018:0399
generic

CVE-2017-8824 - PSIRT.COM

http://www.securityfocus.com/bid/102056
generic🟡 PoC Available

oss-security - CVE-2017-8824 linux: use-after-free in DCCP code

http://www.openwall.com/lists/oss-security/2017/12/05/1
generic

netdev - [PATCH] dccp: CVE-2017-8824: use-after-free in DCCP code

http://lists.openwall.net/netdev/2017/12/04/224

Vendor Advisories for CVE-2017-8824(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(8)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatkernel-0:2.6.18-436.el52018-12-13redhat
redhatkernel-0:2.6.32-696.28.1.el62018-05-08redhat
redhatkernel-0:3.10.0-327.66.1.el72018-04-24redhat
redhatkernel-0:3.10.0-693.25.2.el72018-04-17redhat
redhatkernel-rt-1:3.10.0-693.25.2.rt56.612.el6rt2018-04-17redhat
redhatkernel-rt-0:3.10.0-862.rt56.804.el72018-04-10redhat
redhatkernel-0:3.10.0-862.el72018-04-10redhat
redhatkernel-0:3.10.0-514.44.1.el72018-03-06redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(7 across 7 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.14.7-1: fixed in 4.14.7-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.14.7-1: fixed in 4.14.7-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.14.7-1: fixed in 4.14.7-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.14.7-1: fixed in 4.14.7-1
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
linux3.2.41-2 ... 3.2.93-1 (68 versions)
  • every version up to 3.2.96-1: fixed in 3.2.96-1
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
linux3.16.36-1 ... 3.16.7-ckt9-3~deb8u1~bpo70+1 (55 versions)
  • every version up to 3.16.51-3+deb8u1: fixed in 3.16.51-3+deb8u1
—
Debian:9(1)
PackageVulnerable rangeFix by version rangeDependents
linux4.9.30-2 ... 4.9.65-3~bpo8+1 (16 versions)
  • every version up to 4.9.65-3+deb9u1: fixed in 4.9.65-3+deb9u1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(7)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 180 total refreshes for this CVE.

  1. 2026-10-09 20:02 UTCEPSS rescore
  2. 2026-10-08 16:36 UTCEPSS rescore
  3. 2026-10-07 23:41 UTCEPSS rescore
  4. 2026-10-07 20:05 UTCOSV refresh
  5. 2026-10-06 15:12 UTCEPSS rescore
  6. 2026-10-05 17:39 UTCEPSS rescore
  7. 2026-10-03 14:21 UTCEPSS rescore
  8. 2026-10-03 14:21 UTCEPSS rescore
  9. 2026-09-30 14:59 UTCEPSS rescore
  10. 2026-09-30 09:44 UTCEG score recompute
  11. 2026-09-28 13:45 UTCEPSS rescore
  12. 2026-09-27 13:40 UTCEPSS rescore
  13. 2026-09-27 13:40 UTCEPSS rescore
  14. 2026-09-26 15:53 UTCEPSS rescore
  15. 2026-09-26 00:19 UTCEPSS rescore
  16. 2026-09-24 13:59 UTCEPSS rescore
  17. 2026-09-23 13:42 UTCEPSS rescore
  18. 2026-09-21 20:27 UTCEPSS rescore
  19. 2026-09-19 15:36 UTCEPSS rescore
  20. 2026-09-18 02:20 UTCOSV refresh
  21. 2026-09-17 19:22 UTCEPSS rescore
  22. 2026-09-17 19:22 UTCEPSS rescore
  23. 2026-09-15 03:05 UTCEPSS rescore
  24. 2026-09-13 16:42 UTCEPSS rescore
  25. 2026-09-12 14:56 UTCEPSS rescore
Show 75 more
  1. 2026-09-11 09:31 UTCEPSS rescore
  2. 2026-09-07 15:56 UTCEPSS rescore
  3. 2026-09-05 15:24 UTCEPSS rescore
  4. 2026-09-04 13:56 UTCEPSS rescore
  5. 2026-09-04 05:02 UTCEPSS rescore
  6. 2026-09-02 14:07 UTCEPSS rescore
  7. 2026-09-02 14:07 UTCEPSS rescore
  8. 2026-09-01 03:31 UTCEPSS rescore
  9. 2026-08-30 19:13 UTCEPSS rescore
  10. 2026-08-30 03:18 UTCOSV refresh
  11. 2026-08-28 21:36 UTCEPSS rescore
  12. 2026-08-27 14:21 UTCEPSS rescore
  13. 2026-08-26 14:41 UTCEPSS rescore
  14. 2026-08-25 13:44 UTCEPSS rescore
  15. 2026-08-23 00:14 UTCEPSS rescore
  16. 2026-08-21 23:44 UTCEPSS rescore
  17. 2026-08-19 16:59 UTCEPSS rescore
  18. 2026-08-18 13:43 UTCEPSS rescore
  19. 2026-08-16 14:51 UTCEPSS rescore
  20. 2026-08-16 02:10 UTCEPSS rescore
  21. 2026-08-15 01:26 UTCEPSS rescore
  22. 2026-08-13 15:21 UTCOSV refresh
  23. 2026-08-12 13:46 UTCEPSS rescore
  24. 2026-08-09 13:42 UTCEPSS rescore
  25. 2026-08-08 16:32 UTCEPSS rescore
  26. 2026-08-07 16:22 UTCEPSS rescore
  27. 2026-08-06 13:42 UTCEPSS rescore
  28. 2026-08-06 13:42 UTCEPSS rescore
  29. 2026-08-05 19:13 UTCEPSS rescore
  30. 2026-08-02 02:23 UTCEPSS rescore
  31. 2026-08-02 02:23 UTCEPSS rescore
  32. 2026-08-01 04:12 UTCEPSS rescore
  33. 2026-07-30 16:24 UTCEPSS rescore
  34. 2026-07-30 01:26 UTCEPSS rescore
  35. 2026-07-28 21:47 UTCOSV refresh
  36. 2026-07-28 15:32 UTCEPSS rescore
  37. 2026-07-26 14:51 UTCEPSS rescore
  38. 2026-07-26 14:51 UTCEPSS rescore
  39. 2026-07-23 14:15 UTCEPSS rescore
  40. 2026-07-23 01:31 UTCEG score recompute
  41. 2026-07-22 22:10 UTCEG score recompute
  42. 2026-07-22 14:04 UTCEPSS rescore
  43. 2026-07-21 15:21 UTCEPSS rescore
  44. 2026-07-20 17:04 UTCEPSS rescore
  45. 2026-07-20 17:04 UTCEPSS rescore
  46. 2026-07-19 14:28 UTCEPSS rescore
  47. 2026-07-19 14:28 UTCEPSS rescore
  48. 2026-07-19 02:26 UTCEPSS rescore
  49. 2026-07-19 02:26 UTCEPSS rescore
  50. 2026-07-18 10:01 UTCEPSS rescore
  51. 2026-07-16 16:59 UTCEPSS rescore
  52. 2026-07-16 16:59 UTCEPSS rescore
  53. 2026-07-15 16:55 UTCEPSS rescore
  54. 2026-07-15 16:54 UTCEPSS rescore
  55. 2026-07-15 01:56 UTCEPSS rescore
  56. 2026-07-15 01:56 UTCEPSS rescore
  57. 2026-07-13 22:26 UTCEPSS rescore
  58. 2026-07-13 22:26 UTCEPSS rescore
  59. 2026-07-12 05:43 UTCEPSS rescore
  60. 2026-07-11 14:22 UTCOSV refresh
  61. 2026-07-11 08:24 UTCEPSS rescore
  62. 2026-07-09 19:06 UTCEPSS rescore
  63. 2026-07-08 15:11 UTCEPSS rescore
  64. 2026-07-06 16:24 UTCEPSS rescore
  65. 2026-07-06 16:24 UTCEPSS rescore
  66. 2026-07-06 02:20 UTCEPSS rescore
  67. 2026-07-06 02:20 UTCEPSS rescore
  68. 2026-07-05 02:27 UTCEPSS rescore
  69. 2026-07-04 06:28 UTCEPSS rescore
  70. 2026-07-04 06:28 UTCEPSS rescore
  71. 2026-07-02 16:54 UTCEPSS rescore
  72. 2026-07-01 15:03 UTCEPSS rescore
  73. 2026-06-30 23:19 UTCEPSS rescore
  74. 2026-06-30 23:19 UTCEPSS rescore
  75. 2026-06-29 14:03 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-43234✓ verified
    First seen Dec 7, 2017

    Linux Kernel 4.10.5 / < 4.14.3 (Ubuntu) - DCCP Socket Use-After-Free

    Open source ↗

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2017-8824?
CVE-2017-8824 is a high vulnerability published on December 5, 2017. The dccpdisconnect 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 AFUNSPEC connect system call during the DCCP_LISTEN state.
When was CVE-2017-8824 disclosed?
CVE-2017-8824 was first published on December 5, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-8824 actively exploited?
CVE-2017-8824 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 1.3% probability of exploitation in the next 30 days (70th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-8824?
CVE-2017-8824 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2017-8824?
A fix for CVE-2017-8824 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2017-8824 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2017-8824

Explore →

Is Your Infrastructure Affected by CVE-2017-8824?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs