CVE-2021-47298

bpf, sockmap: Fix potential memory leak on unlikely error case

Description

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix potential memory leak on unlikely error case If skb_linearize is needed and fails we could leak a msg on the error handling. To fix ensure we kfree the msg block before returning error. Found during code review.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/715f378f42909c401ec043f5150c4fdf57fb8889 patch
https://git.kernel.org/stable/c/6c508a1c6c62793dc6e6872cad4b200097bab7c9 patch
https://git.kernel.org/stable/c/7e6b27a69167f97c56b5437871d29e9722c3e470 patch

Frequently Asked Questions

What is the severity of CVE-2021-47298?
CVE-2021-47298 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47298?
To fix CVE-2021-47298, 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-2021-47298 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47298 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-2021-47298?
CVE-2021-47298 affects Linux Linux, Linux Linux.
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