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.
Published 2019-04-11 15:29:00
Updated 2022-12-02 23:05:21
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionDenial of service

Threat overview for CVE-2019-3837

Top countries where our scanners detected CVE-2019-3837
Top open port discovered on systems with this issue 53
IPs affected by CVE-2019-3837 17,180
Threat actors abusing to this issue? Yes
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Exploit prediction scoring system (EPSS) score for CVE-2019-3837

0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 10 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-3837

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.9
MEDIUM AV:L/AC:L/Au:N/C:N/I:N/A:C
3.9
6.9
NIST
6.1
MEDIUM CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
1.8
4.2
Red Hat, Inc.
6.1
MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
1.8
4.2
NIST

CWE ids for CVE-2019-3837

References for CVE-2019-3837

Products affected by CVE-2019-3837

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