CVE-2021-38783: There is a Out-of-Bound Write in the Allwinner R818 SoC Android Q SDK V1.0 camera driver "/dev/cedar_dev" thro

This month

HIGH 7.5REMOTEDOWNGRADE

CVE-2021-38783 is a high-severity flaw (CVSS 7.5) affecting android q sdk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

There is a Out-of-Bound Write in the Allwinner R818 SoC Android Q SDK V1.0 camera driver "/dev/cedar_dev" through iotcl cmd IOCTL_SET_PROC_INFO and IOCTL_COPY_PROC_INFO, which could cause a system crash or EoP.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-787
Published	2022-01-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: allwinnertech

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

Am I affected?

Timeline

2022-01-18 13:15 UTCPublished CVE record published
2026-06-17 04:02 UTCUpdated Record last modified

allwinnertech android q sdk DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy android-q-sdk || rpm -q android-q-sdk || android-q-sdk --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison android-q-sdk sudo apt install android-q-sdk=<VERSION_BEFORE_1.0> sudo apt-mark hold android-q-sdk

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list android-q-sdk sudo dnf downgrade android-q-sdk-<VERSION_BEFORE_1.0> sudo dnf versionlock add android-q-sdk

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2021-38783?

android q sdk: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-38783 being exploited?

CVE-2021-38783 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-2021-38783 affect?

CVE-2021-38783 affects android q sdk. Severity is high (CVSS 7.5). There is a Out-of-Bound Write in the Allwinner R818 SoC Android Q SDK V1.0 camera driver "/dev/cedar_dev" through iotcl cmd IOCTL_SET_PROC_INFO and IOCTL_COPY_PROC_INFO, which could cause a system crash or EoP.

How urgent is CVE-2021-38783?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

Software pages

Android vulnerabilities

Related CVEs

CVE-2021-38789 HIGH 7.5 DOWNGRADE Allwinner R818 SoC Android Q SDK V1.0 is affected by an incorrect access control vulnerability that does not c
CVE-2021-38788 HIGH 7.5 DOWNGRADE The Background service in Allwinner R818 SoC Android Q SDK V1.0 is used to manage background applications
CVE-2021-38787 HIGH 7.5 DOWNGRADE There is an integer overflow in the ION driver "/dev/ion" of Allwinner R818 SoC Android Q SDK V1.0 that could
CVE-2021-38786 HIGH 7.5 DOWNGRADE There is a NULL pointer dereference in media/libcedarc/vdecoder of Allwinner R818 SoC Android Q SDK V1.0, whic
CVE-2021-38785 HIGH 7.5 DOWNGRADE There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev th

References

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