Use of a Non-reentrant Function in a Concurrent Context Affecting python-perf package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.09% (26th percentile)

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  • Snyk IDSNYK-CENTOS6-PYTHONPERF-2010632
  • published26 Jul 2021
  • disclosed3 Apr 2019

Introduced: 3 Apr 2019

CVE-2019-3837  (opens in a new tab)
CWE-663  (opens in a new tab)

How to fix?

There is no fixed version for Centos:6 python-perf.

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 Centos. See How to fix? for Centos:6 relevant fixed versions and status.

It was found that the net_dma code in tcp_recvmsg() in the 2.6.32 kernel as shipped in RHEL6 is thread-unsafe. So an unprivileged multi-threaded userspace application calling recvmsg() for the same network socket in parallel executed on ioatdma-enabled hardware with net_dma enabled can leak the memory, crash the host leading to a denial-of-service or cause a random memory corruption.

CVSS Base Scores

version 3.1