{"id":"CVE-2021-38787","aliases":["EUVD-2021-25224","GHSA-h6gg-5gq2-7fgc"],"status":"published","title":"There is an integer overflow in the ION driver \"/dev/ion\" of Allwinner R818 SoC Android Q SDK V1...","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).","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01947,"percentile":0.80371,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-190"],"published":"2022-01-19T12:46:44Z","modified":"2026-06-17T04:02:43Z","products":[{"vendor":"allwinnertech","product":"android_q_sdk"}],"references":[{"url":"https://www.allwinnertech.com/index.php?c=product\u0026a=index\u0026id=92","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9AION%20Driver%20Integer%20Overflow.md","tags":["x_refsource_MISC","x_transferred","Broken Link","Third Party Advisory"]},{"url":"https://www.cnvd.org.cn/flaw/show/CNVD-2021-49171","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://vul.wangan.com/a/CNVD-2021-49171","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38787"},{"url":"https://github.com/advisories/GHSA-h6gg-5gq2-7fgc"}],"sources":{"cve":[{"id":"CVE-2021-38787","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).","status":"published","published":"2022-01-19T12:46:44Z","modified":"2024-08-04T01:51:20.152Z","updated_at":"2026-11-02T14:33:07.349244Z"}],"euvd":[{"id":"EUVD-2021-25224","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).","status":"published","published":"2022-01-19T12:46:44Z","modified":"2024-08-04T01:51:20Z","updated_at":"2026-11-03T03:24:24.305495Z"}],"ghsa":[{"id":"GHSA-h6gg-5gq2-7fgc","title":"There is an integer overflow in the ION driver \"/dev/ion\" of Allwinner R818 SoC Android Q SDK V1...","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).","status":"published","published":"2022-01-20T00:00:29Z","modified":"2023-02-03T05:04:39Z","cwes":["CWE-190"],"updated_at":"2026-11-02T14:53:35.806518Z"}],"nvd":[{"id":"CVE-2021-38787","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).","status":"published","published":"2022-01-19T13:15:07.87Z","modified":"2026-06-17T04:02:43.87Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:07:03.821385Z"}]}}