The following security vulnerabilities have been identified:
In core_info_read and inst_info_read variable "dbg_buf", "dbg_buf->curr" and "dbg_buf->filled_size" could be modified by different threads at the same time, but they are not protected with mutex or locks. Buffer overflow is possible on race conditions. "buffer->curr" itself could also be overwritten, which means that it may point to anywhere of kernel memory (for write).
Access Vector: Local
Security Risk: Medium
Vulnerability: CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
All Android releases from CAF using the Linux kernel.
We advise customers to apply the following patches:
This issue was reported to Google by an external security researcher. Qualcomm Innovation Center, Inc. (QuIC) thanks Google for bringing this issue to QuIC's attention.