Description
The Linux kernel through 5.3.13 has a start_offset+size Integer Overflow in cpia2_remap_buffer in drivers/media/usb/cpia2/cpia2_core.c because cpia2 has its own mmap implementation. This allows local users (with /dev/video0 access) to obtain read and write permissions on kernel physical pages, which can possibly result in a privilege escalation.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/media/usb/cpia2/cpia2_core.c ↗
- https://deshal3v.github.io/blog/kernel-research/mmap_exploitation ↗
- https://security.netapp.com/advisory/ntap-20200103-0001/ ↗
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be83bbf806822b1b89e0a0f23cd87cddc409e429 ↗