Description
The ring_buffer_resize function in kernel/trace/ring_buffer.c in the profiling subsystem in the Linux kernel before 4.6.1 mishandles certain integer calculations, which allows local users to gain privileges by writing to the /sys/kernel/debug/tracing/buffer_size_kb file.
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://source.android.com/security/bulletin/2017-01-01.html ↗
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1 ↗
- http://www.securityfocus.com/bid/95278 ↗
- https://github.com/torvalds/linux/commit/59643d1535eb220668692a5359de22545af579f6 ↗
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59643d1535eb220668692a5359de22545af579f6 ↗