CVE-2019-3837

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.09%
Third-Party Advisory redhat.com
Affected: The Linux Foundation kernel
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3837 patch third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2019-3837?
CVE-2019-3837 has been scored as a medium severity vulnerability.
How to fix CVE-2019-3837?
To fix CVE-2019-3837, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-3837 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-3837 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-3837?
CVE-2019-3837 affects The Linux Foundation kernel.
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