CVE-2021-20265

Description

A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.

Categories

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.02%
Vendor Advisory kernel.org
Affected: n/a kernel
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1908827 issue tracking third party advisory patch
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa0dc04df259ba2df3ce1920e9690c7842f8fa4b patch vendor advisory
https://www.oracle.com/security-alerts/cpuoct2021.html third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-20265?
CVE-2021-20265 has been scored as a medium severity vulnerability.
How to fix CVE-2021-20265?
To fix CVE-2021-20265, 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-2021-20265 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20265 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-2021-20265?
CVE-2021-20265 affects n/a kernel.
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