CVE-2018-20787: The ft5x46 touchscreen driver for custom Linux kernels on the Xiaomi perseus-p-oss MIX 3 device through 2018-1

Q: How do I fix CVE-2018-20787?

xiaomi perseus-p-oss: upgrade to newer than 2018-11-26. Exact commands for each OS are on this page.

Q: Is CVE-2018-20787 being exploited?

CVE-2018-20787 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-20787 affect?

CVE-2018-20787 affects xiaomi perseus-p-oss. Severity is medium (CVSS 5.5). The ft5x46 touchscreen driver for custom Linux kernels on the Xiaomi perseus-p-oss MIX 3 device through 2018-11-26 has an integer overflow and OOPS because of missing checks of the size argument in tpdbg_write in drivers/input/touchscreen/f

Q: How urgent is CVE-2018-20787?

Priority 38/100. On your watchlist

Routine

MEDIUM 5.5WATCHLISTUPGRADE

CVE-2018-20787 is a medium-severity flaw (CVSS 5.5) affecting xiaomi perseus-p-oss. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ft5x46 touchscreen driver for custom Linux kernels on the Xiaomi perseus-p-oss MIX 3 device through 2018-11-26 has an integer overflow and OOPS because of missing checks of the size argument in tpdbg_write in drivers/input/touchscreen/ft5x46/ft5x46_ts.c. This is exploitable for a device crash via a syscall by a crafted application on a rooted device.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-190
Published	2019-02-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: micode

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-02-25 04:29 UTCPublished CVE record published
2026-06-17 01:53 UTCUpdated Record last modified

micode xiaomi perseus-p-oss UPGRADE

Affected: <= 2018-11-26

Fixed in: newer than 2018-11-26

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-20787?

xiaomi perseus-p-oss: upgrade to newer than 2018-11-26. Exact commands for each OS are on this page.

Is CVE-2018-20787 being exploited?

CVE-2018-20787 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-20787 affect?

CVE-2018-20787 affects xiaomi perseus-p-oss. Severity is medium (CVSS 5.5). The ft5x46 touchscreen driver for custom Linux kernels on the Xiaomi perseus-p-oss MIX 3 device through 2018-11-26 has an integer overflow and OOPS because of missing checks of the size argument in tpdbg_write in drivers/input/touchscreen/f

How urgent is CVE-2018-20787?

Priority 38/100. On your watchlist

Software pages

Xiaomi vulnerabilities

Related CVEs

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CVE-2018-20788 MEDIUM 5.5 UPGRADE drivers/leds/leds-aw2023.c in the led driver for custom Linux kernels on the Xiaomi Redmi 6pro daisy-o-oss pho

References

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