Vulnerability in Linux

CVE-2021-47514

In the Linux kernel, the following vulnerability has been resolved: devlink: fix netns refcount leak in devlink_nl_cmd_reload() While preparing my patch series adding netns refcount tracking, I spotted bugs in devlink_nl_cmd_reload() Some error paths forgot to release a refcount on a netns. To fix this, we can reduce the scope of get_net()/put_net() section around the call to devlink_reload().

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (13.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-47514: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Linux — versions ccdf07219da6bd1f43c6ddcde4c0e36993c7365a, 5.10, 0
  • Linux Kernel — versions 5.16

References

Frequently asked questions

What is CVE-2021-47514?
CVE-2021-47514 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2024-05-24.
How severe is CVE-2021-47514?
Medium severity. CVSS v3 base score is 5.5 out of 10.