{"id":"CVE-2021-38785","aliases":["EUVD-2021-25222","GHSA-x63x-qrg6-ggcj"],"status":"published","title":"There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev...","description":"There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev that could use the ioctl cmd IOCTL_GET_IOMMU_ADDR to cause a system crash.","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":"2026-11-12","score":0.0188,"percentile":0.79754,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2022-01-18T13:46:23Z","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%9ACamera%20Driver%20has%20Null%20Pointer%20Dereference%20Vulnerability.md","tags":["x_refsource_MISC","x_transferred","Broken Link"]},{"url":"https://www.cnvd.org.cn/flaw/show/CNVD-2021-49170","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://vul.wangan.com/a/CNVD-2021-49170","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38785"},{"url":"https://github.com/advisories/GHSA-x63x-qrg6-ggcj"}],"sources":{"cve":[{"id":"CVE-2021-38785","description":"There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev that could use the ioctl cmd IOCTL_GET_IOMMU_ADDR to cause a system crash.","status":"published","published":"2022-01-18T13:46:23Z","modified":"2024-08-04T01:51:20.093Z","updated_at":"2026-11-02T14:33:07.349244Z"}],"euvd":[{"id":"EUVD-2021-25222","description":"There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev that could use the ioctl cmd IOCTL_GET_IOMMU_ADDR to cause a system crash.","status":"published","published":"2022-01-18T13:46:23Z","modified":"2024-08-04T01:51:20Z","updated_at":"2026-11-03T03:24:24.305495Z"}],"ghsa":[{"id":"GHSA-x63x-qrg6-ggcj","title":"There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev...","description":"There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev that could use the ioctl cmd IOCTL_GET_IOMMU_ADDR to cause a system crash.","status":"published","published":"2022-01-19T00:01:20Z","modified":"2023-02-03T05:04:39Z","cwes":["CWE-476"],"updated_at":"2026-11-02T14:53:35.806518Z"}],"nvd":[{"id":"CVE-2021-38785","description":"There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev that could use the ioctl cmd IOCTL_GET_IOMMU_ADDR to cause a system crash.","status":"published","published":"2022-01-18T14:15:08.133Z","modified":"2026-06-17T04:02:43.623Z","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-476"],"updated_at":"2026-11-02T14:07:03.821385Z"}]}}