intelligence_src_350d40f2cc69277bca
- Source-provided label
- Publisher RSS metadata
- Evidence class
- mentioned in report
- Confidence
- Not reported
- Observed
- May 18, 2022 00:00 UTC
- Retrieved
- Oct 14, 2026 20:37 UTC
CVE-2021-39992: Huawei Kernel Memory Access Permission Bypass via EDMA
Summary There is a vulnerability in the Huawei Kirin SoC’s DDR Controller (DMSS) Access Permission system which allows the Linux kernel to bypass memory access restrictions and directly compromise multiple privileged subsystems of the SoC. As demonstrated by CVE-2021-3710, CVE-2021-39991, CVE-2021-37115, and CVE-2021-39986, read and write of critical system memory, including secure memory regions, is possible via those subsystems. Therefore, this vulnerability combined with one of CVE-2021-3710, CVE-2021-39991, CVE-2021-37115, or CVE-2021-39986 results in a fully realized chain of elevation of privileges from a kernel-level write primitive to total control of the secure world (TEE). The vulnerability was fixed in February 2022.
Reference details
- Source category
- research-report
- First reported
- May 18, 2022 00:00 UTC
- Last reported
- May 18, 2022 00:00 UTC
- Catalog updated
- Oct 14, 2026 20:37 UTC
- Record ID
eff70b6ccb20610cb91ae690dc9915c06e0ae6daf4300df45c4e8af705e1ee24
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