CVE-2021-38787 json
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…
published 2022-01-19 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-25224
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
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).
Exploit prediction
1.95% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
-
allwinnertech.com
/index.php?c=product&a=index&id=92
product, vendor-advisory
-
github.com
/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9AION%20Driver%20Integer%20Overflow.md
broken-link, third-party-advisory
-
cnvd.org.cn
/flaw/show/CNVD-2021-49171
third-party-advisory
-
vul.wangan.com
/a/CNVD-2021-49171
third-party-advisory
Sources
- CVE List CVE-2021-38787
- NVD CVE-2021-38787
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