What is CVE-2021-47190?

CVE-2021-47190 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 5.1 onward and patched in 5.4.162, 5.10.82, 5.15.5 and others. CVE-2021-47190 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47190?

CVE-2021-47190 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-47190?

Yes, CVE-2021-47190 has been patched. Fixed versions include 5.4.162, 5.10.82, 5.15.5 and others. If you are running Linux kernel 5.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47190 actively exploited?

CVE-2021-47190 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2021-47190

Medium

In the Linux kernel, the following vulnerability has been resolved: perf bpf: Avoid memory leak from perf_env__insert_btf() perf_env__insert_btf() doesn't insert if a duplicate BTF id is encountered and this causes a memory leak. Modify the function to return a success/error value and then free the memory if insertion didn't happen. v2. Adds a return -1 when the insertion error occurs in perf_env__fetch_btf. This doesn't affect anything as the result is never checked.

Package Linux Kernel

Published 2024-04-10

Last modified 2025-01-07

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-401

CVE-2021-47190 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.1 and later are affected. Fixed in 5.4.162, 5.10.82, 5.15.5, 5.16 and their respective stable series.

Affected from

≥ 5.1

Fixed in

✓ 5.4.162 5.4.x ✓ 5.10.82 5.10.x ✓ 5.15.5 5.15.x ✓ 5.16

References

4 total

Kernel Git
https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc

Patch
Kernel Git
https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f

Patch
Kernel Git
https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2

Patch
Kernel Git
https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e

Patch

Details

CVE ID CVE-2021-47190

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-10

Modified 2025-01-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47190?

CVE-2021-47190 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 5.1 onward and has been patched in 5.4.162, 5.10.82, 5.15.5 and others. CVE-2021-47190 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47190?

CVE-2021-47190 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-47190?

Yes. CVE-2021-47190 has been patched. Fixed versions include 5.4.162, 5.10.82, 5.15.5 and others. If you are running Linux kernel 5.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47190 actively exploited?

No. CVE-2021-47190 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.