CVE-2017-8244
HighSummary
In core_info_read and inst_info_read in all Android releases from CAF, variables 'dbg_buf', 'dbg_buf->curr', and 'dbg_buf->filled_size' can be modified simultaneously by different threads, leading to a lack of protection with mutexes or locks. Buffer overflow is possible on race conditions.
Risk Assessment
The organization may be exposed to attacks that exploit buffer overflow, potentially leading to unauthorized access to kernel memory and privilege escalation.
Recommendation
It is recommended to implement appropriate synchronization mechanisms, such as mutexes or locks, to secure access to variables in core_info_read and inst_info_read.
Other vulnerabilities in Android releases from CAF using the Linux kernel
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- CVE-2017-7365High
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- CVE-2016-10341High
All Android releases from CAF using the Linux kernel have a problem with excessive privileges for third-party TEEs (Trusted Execution Environments). This may lead to unauthorized access to system resources.
- CVE-2016-10340High
All Android releases from CAF using the Linux kernel contain a buffer overflow vulnerability caused by an integer underflow in a syscall handler.
Original NVD description (English source)
In core_info_read and inst_info_read in all Android releases from CAF using the Linux kernel, 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).