CVE-2017-8255

In Qualcomm products with Android releases from CAF, during DMA allocation, due to wrong data type of size, allocation size gets truncated which makes allocation succeed when it should fail.

In Qualcomm products with Android releases from CAF using the Linux kernel, user-level permissions can be used to gain access to kernel memory. Specifically, the ION cache maintenance code is writing to a user supplied address.

In Qualcomm products with Android releases from CAF, in function msm_compr_ioctl_shared, the variable 'ddp->params_length' could be accessed and modified by multiple threads without proper protection. This can lead to race conditions and buffer overflow if the variable is set to a large value.

In Qualcomm products with Android releases from CAF, in the function msm_dba_register_client, there is an issue where if client registration fails, the client is freed but not removed from the list. This can lead to a use-after-free situation when traversing the list next time.

In Qualcomm products with Android releases from CAF, user controlled variables 'nr_cmds' and 'nr_bos' are passed across functions without any checks. This may lead to buffer overflow when the values are too large or negative.

In Qualcomm products with Android releases from CAF, there is an issue with multiple threads performing the device open operation. This may lead to get_pid being called multiple times, while put_pid is called only once.

All Qualcomm products with Android releases from CAF using the Linux kernel may be susceptible to memory corruption. This issue occurs during concurrent calls into ioctl RMNET_IOCTL_ADD_MUX_CHANNEL in the ipa wan driver due to missing locks.

All Qualcomm products with Android releases from CAF using the Linux kernel may leak kernel memory contents to system logs if a userspace string is not NULL-terminated.

In Qualcomm products with Android releases from CAF, in some memory allocation and free functions, a race condition can potentially occur leading to a Use After Free condition.

All Qualcomm products with Android releases from CAF using the Linux kernel have an issue with improper type downcasting, which may lead to a value improperly passing validation and causing an out of bounds write later.