HOMEVULNERABILITIESCVE-2018-19939
HIGH

CVE-2018-19939

CWE-476Published: December 7, 2018· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

The Goodix GT9xx touchscreen driver for custom Linux kernels on Xiaomi daisy-o-oss and daisy-p-oss as used in Mi A2 Lite and RedMi6 pro devices through 2018-08-27 has a NULL pointer dereference in kfree after a kmalloc failure in gtp_read_Color in drivers/input/touchscreen/gt917d/gt9xx.c.

NVD Source

Technical Analysis

CVE-2018-19939 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

mi4 product(s)
mi a2 lite firmwaremi a2 literedmi 6 firmwareredmi 6
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/MiCode/Xiaomi_Kernel_OpenSource/issues/972
ADVISORYhttps://github.com/MiCode/Xiaomi_Kernel_OpenSource/issues/972

All References (2)

→
https://github.com/MiCode/Xiaomi_Kernel_OpenSource/issues/972Issue Tracking · Third Party Advisory
→
https://github.com/MiCode/Xiaomi_Kernel_OpenSource/issues/972Issue Tracking · Third Party Advisory

Quick Facts

CVE IDCVE-2018-19939
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-476
CISA KEVNo
Affected1 vendor(s)
PublishedDec 7, 2018

Related CVEs (CWE-476)

CVE-2010-2495
10.0
CVE-2022-36648
10.0
CVE-2017-18211
9.8
CVE-2018-7548
9.8
CVE-2017-18210
9.8
CVE-2017-12627
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-19939 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2018-19939·NVD