CVE-2018-9422

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
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In get_futex_key of futex.c, there is a use-after-free due to improper locking. This could lead to local escalation of privilege with no additional privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android ID: A-74250718 References: Upstream kernel.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA 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%
Exploitation0% × 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
0.2%
EPSS %ILE
10th
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 none (no KEV listing, exploit record or EPSS ≥ 50%) · 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

November 6, 2018

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Sep 30, 2026
Patch available.
generic

Android Security Bulletin—July 2018  |  Android Open Source Project

https://source.android.com/security/bulletin/2018-07-01
generic Patch Available

[SECURITY] [DLA 1422-2] linux security update

https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
generic Patch Available

[SECURITY] [DLA 1422-1] linux security update

https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
generic

Making sure you're not a bot!

https://bugzilla.suse.com/show_bug.cgi?id=1102001&_ga=2.244341506.661832603.1561012452-1774095668.1553066022

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.6.1-1: fixed in 4.6.1-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.6.1-1: fixed in 4.6.1-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.6.1-1: fixed in 4.6.1-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 4.6.1-1: fixed in 4.6.1-1
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
linux3.16.36-1 ... 3.16.7-ckt9-3~deb8u1~bpo70+1 (58 versions)
  • every version up to 3.16.57-1: fixed in 3.16.57-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 25× 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 157 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)· as of October 4, 2026

Frequently asked(5)

What is CVE-2018-9422?
CVE-2018-9422 is a high vulnerability published on November 6, 2018. In getfutexkey of futex.c, there is a use-after-free due to improper locking. This could lead to local escalation of privilege with no additional privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android kernel Android ID: A-74250718 References: Upstream…
When was CVE-2018-9422 disclosed?
CVE-2018-9422 was first published on November 6, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-9422 actively exploited?
CVE-2018-9422 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-9422?
CVE-2018-9422 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2018-9422?
A fix for CVE-2018-9422 is available: update to the fixed version the vendor names in its advisory.

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