Integer Overflow or Wraparound Affecting kernel-rt-trace package, versions <0:3.10.0-514.16.1.rt56.437.el7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-RHEL7-KERNELRTTRACE-4660034
  • published26 Jul 2021
  • disclosed2 Dec 2016

Introduced: 2 Dec 2016

CVE-2016-9793  (opens in a new tab)
CWE-190  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:7 kernel-rt-trace to version 0:3.10.0-514.16.1.rt56.437.el7 or higher.
This issue was patched in RHSA-2017:0931.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-trace package and not the kernel-rt-trace package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The sock_setsockopt function in net/core/sock.c in the Linux kernel before 4.8.14 mishandles negative values of sk_sndbuf and sk_rcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability for a crafted setsockopt system call with the (1) SO_SNDBUFFORCE or (2) SO_RCVBUFFORCE option.

CVSS Scores

version 3.1