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CVE-2019-3837

MEDIUM
Published 2019-04-11T14:37:26
Actions:

Expert Analysis

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CVSS Score

V3.0
6.1
/10
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.272
Higher than 27.2% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
LOW
Availability
HIGH

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

The Linux Foundation

kernel

Affected Versions:

2.6.32 as shipped in rhel-6

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-hx7v-466q-33qj

Advisory Details

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 Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2019-3837
WEB https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3837

Advisory provided by GitHub Security Advisory Database. Published: May 13, 2022, Modified: May 13, 2022

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3837
Published: 2019-04-11T14:37:26
Last Modified: 2024-08-04T19:19:18.565Z
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