CVE-2016-9754
kernel: Integer overflow in ring_buffer_resize()
Severity
ImportantRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · May 13, 2016
Updated · November 21, 2025
Description
An integer overflow vulnerability was found in the ring_buffer_resize() calculations in which a privileged user can adjust the size of the ringbuffer message size. These calculations can create an issue where the kernel memory allocator will not allocate the correct count of pages yet expect them to be usable. This can lead to the ftrace() output to appear to corrupt kernel memory and possibly be used for privileged escalation or more likely kernel panic.
Statement
This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5,6 and 7 kernels.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 6.7CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 · 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C
CWE-190 · Integer Overflow or Wraparound