What is CVE-2021-47070?

CVE-2021-47070 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2024-03-01.

How severe is CVE-2021-47070?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2021-47070 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linux

CVE-2021-47070

In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix another memory leak in error handling paths Memory allocated by 'vmbus_alloc_ring()' at the beginning of the probe function is never freed in the error handling path. Add the missing 'vmbus_free_ring()' call. Note that it is already freed in the .remove function.

EPSS: 0.002 (13.8th percentile) — read the EPSS interpretation.

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:H/I:N/A:N.

Affected products

Linux — versions cdfa835c6e5e87d145f9f632b58843de97509f2b, 4.20, 0
Linux Linux_kernel — versions 5.13

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

Public proof-of-concept exploits

w4zu/Debian_

References

Frequently asked questions

What is CVE-2021-47070?: CVE-2021-47070 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2024-03-01.
How severe is CVE-2021-47070?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2021-47070 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.