Use After Free Affecting python-perf package, versions <0:2.6.32-642.13.1.el6


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ORACLE6-PYTHONPERF-2511075
  • published10 Apr 2022
  • disclosed16 Oct 2016

Introduced: 16 Oct 2016

CVE-2016-6828  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:6 python-perf to version 0:2.6.32-642.13.1.el6 or higher.
This issue was patched in ELSA-2017-0036.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-perf package and not the python-perf package as distributed by Oracle. See How to fix? for Oracle:6 relevant fixed versions and status.

The tcp_check_send_head function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted SACK option.