UBUNTU-CVE-2016-9754
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.
02 / AFFECTED SOFTWARE
Affected packages
120 explicit affected versions
8 explicit affected versions
27 explicit affected versions
9 explicit affected versions
4 explicit affected versions
44 explicit affected versions
38 explicit affected versions
43 explicit affected versions
10 explicit affected versions
50 explicit affected versions
26 explicit affected versions
51 explicit affected versions
78 explicit affected versions
6 explicit affected versions
12 explicit affected versions
1 explicit affected versions
1 explicit affected versions
23 explicit affected versions
7 explicit affected versions
7 explicit affected versions
8 explicit affected versions
7 explicit affected versions
1 explicit affected versions
1 explicit affected versions
24 explicit affected versions
61 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59643d1535eb220668692a5359de22545af579f6
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1
- https://github.com/torvalds/linux/commit/59643d1535eb220668692a5359de22545af579f6
- https://source.android.com/security/bulletin/2017-01-01.html
- https://ubuntu.com/security/CVE-2016-9754
- https://ubuntu.com/security/notices/USN-3422-1
- https://ubuntu.com/security/notices/USN-3422-2
- https://www.cve.org/CVERecord?id=CVE-2016-9754