Integer overflow in Linux Kernel
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel — versions 4.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- source.android.com/security/bulletin/2017-01-01.html (Third Party Advisory)
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.1 (Release Notes)
- www.securityfocus.com/bid/95278 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/torvalds/linux/commit/59643d1535eb220668692a5359de22545af579f6 (Patch, Vendor Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Exploit, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2016-9754?
- CVE-2016-9754 is a high-severity vulnerability in Linux Kernel, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2017-01-05.
- How severe is CVE-2016-9754?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-9754 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.