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Vulnerability record · CVE-2018-19939 · published 7 December 2018

CVE-2018-19939: Mi a2 lite firmware null pointer dereference vulnerability

MMi · Mi A2 Lite Firmware

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.

7.5 CVSS 3.1 High EPSS 1.3% · top 31.2% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score, v2 5.0
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/MiCode/Xiaomi_Kernel_OpenSource/issues/972 Issue TrackingThird Party Advisory
https://github.com/MiCode/Xiaomi_Kernel_OpenSource/issues/972 Issue TrackingThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

5.3CVE-2018-20523Mi stock browser command injection vulnerabilityXiaomi Stock Browser 10.2.4.g on Xiaomi Redmi Note 5 Pro devices and other Redmi Android phones allows content provider injection. In other words, a …EPSS 10%3.3CVE-2019-15340Redmi 6 firmware incorrect permission assignment vulnerabilityThe Xiaomi Redmi 6 Pro Android device with a build fingerprint of xiaomi/sakura_india/sakura_india:8.1.0/OPM1.171019.019/V9.6.4.0.ODMMIFD:user/releas…EPSS 0.27%6.2CVE-2026-21525Windows Remote Access Connection Manager null pointer dereference DoSWindows Remote Access Connection Manager contains a null pointer dereference (CWE-476) that lets an unauthorized attacker deny service locally. The f…KEVEPSS 4.8%analysed

Source: NIST National Vulnerability Database (record CVE-2018-19939), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.