What is CVE-2021-47193?

CVE-2021-47193 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2024-04-10.

How severe is CVE-2021-47193?

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

Is CVE-2021-47193 known to be exploited?

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

Vulnerability in Linux

CVE-2021-47193

In the Linux kernel, the following vulnerability has been resolved: scsi: pm80xx: Fix memory leak during rmmod Driver failed to release all memory allocated. This would lead to memory leak during driver removal. Properly free memory when the module is removed.

Published 2024-04-10 · last modified 2026-06-17.

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 (11.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 11.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

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

Affected products

Linux — versions 5a141315ed7c2647fa4518570c4941a02588b466, 5.10, 0
Linux Kernel

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-2021-47193?: CVE-2021-47193 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2024-04-10.
How severe is CVE-2021-47193?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2021-47193 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.