There is a NULL pointer dereference in media/libcedarc/vdecoder of Allwinner R818 SoC…
Priority LOW 36CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
There is a NULL pointer dereference in media/libcedarc/vdecoder of Allwinner R818 SoC Android Q SDK V1.0, which could cause a media crash (denial of service).
Why it matters now
EPSS 0.0178 78th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:allwinnertech:android_q_sdk:1.0:*:*:*:*:*:*:* | 1.0 | Vulnerable | Allwinnertech |
| cpe:2.3:h:allwinnertech:r818:*:*:*:*:*:*:*:* | all versions | Running on | Allwinnertech |
- cpe:2.3:a:allwinnertech:android_q_sdk:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Allwinnertech
- cpe:2.3:h:allwinnertech:r818:*:*:*:*:*:*:*:* Versions all versions Running on ·Allwinnertech
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38786
- 2026-10-03 Alias added: GHSA-4h5q-q65q-355x
References
Advisory 4
- https://www.allwinnertech.com/index.php?c=product&a=index&id=92
- https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9AMedia%20vdecoder%20has%20Null%20Pointer%20Dereference%20Vulnerability.md
- https://www.cnvd.org.cn/flaw/show/CNVD-2021-49173
- https://vul.wangan.com/a/CNVD-2021-49173
More Allwinnertech Android Q Sdk vulnerabilities
- TI-2021-16313 There is an integer overflow in the ION driver "/dev/ion" of Allwinner R818 SoC Android Q… CVSS 3.1HIGH 7.5
- TI-2021-16314 The Background service in Allwinner R818 SoC Android Q SDK V1.0 is used to manage… CVSS 3.1HIGH 7.5
- TI-2021-16311 There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera… CVSS 3.1HIGH 7.5
- TI-2021-16310 There is a NULL pointer dereference in the syscall open_exec function of Allwinner R818… CVSS 3.1HIGH 7.5
- TI-2021-16309 There is a Out-of-Bound Write in the Allwinner R818 SoC Android Q SDK V1.0 camera driver… CVSS 3.1HIGH 7.5
- TI-2021-16315 Allwinner R818 SoC Android Q SDK V1.0 is affected by an incorrect access control… CVSS 3.1HIGH 7.5
Sources
- CVE-2021-38786 · CVE Program
- CVE-2021-38786 · NVD
- FIRST EPSS
- GHSA-4h5q-q65q-355x · GitHub Advisory Database · CC BY 4.0
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