CVE-2021-38787
HIGHCVSS 7.5/10EPSS 1.95%
Last modified
CVE-2021-38787 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. There is an integer overflow in the ION driver "/dev/ion" of Allwinner R818 SoC Android Q SDK V1.0 that could use the ioctl cmd "COMPAT_ION_IOC_SUNXI_FLUSH_RANGE" to cause a system crash (denial of service).. EPSS estimates a 1.95% chance of exploitation in the next 30 days.
Description
There is an integer overflow in the ION driver "/dev/ion" of Allwinner R818 SoC Android Q SDK V1.0 that could use the ioctl cmd "COMPAT_ION_IOC_SUNXI_FLUSH_RANGE" to cause a system crash (denial of service).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Allwinnertech | Android Q Sdk | 1.0 |
References
- https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9AION%20Driver%20Integer%20Overflow.mdBroken Link, Third Party Advisory
- https://vul.wangan.com/a/CNVD-2021-49171Third Party Advisory
- https://www.allwinnertech.com/index.php?c=product&a=index&id=92Product, Vendor Advisory
- https://www.cnvd.org.cn/flaw/show/CNVD-2021-49171Third Party Advisory
- https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9AION%20Driver%20Integer%20Overflow.mdBroken Link, Third Party Advisory
- https://vul.wangan.com/a/CNVD-2021-49171Third Party Advisory
- https://www.allwinnertech.com/index.php?c=product&a=index&id=92Product, Vendor Advisory
- https://www.cnvd.org.cn/flaw/show/CNVD-2021-49171Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-38787?
There is an integer overflow in the ION driver "/dev/ion" of Allwinner R818 SoC Android Q SDK V1.0 that could use the ioctl cmd "COMPAT_ION_IOC_SUNXI_FLUSH_RANGE" to cause a system crash (denial of service).
How severe is CVE-2021-38787?
CVE-2021-38787 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.95% probability of exploitation in the next 30 days.
How do I fix CVE-2021-38787?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-38787?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST