What is CVE-2021-47320?

CVE-2021-47320 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 3.14 onward and patched in 4.4.276, 4.9.276, 4.14.240 and others. CVE-2021-47320 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47320?

CVE-2021-47320 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-2021-47320?

Yes, CVE-2021-47320 has been patched. Fixed versions include 4.4.276, 4.9.276, 4.14.240 and others. If you are running Linux kernel 3.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47320 actively exploited?

CVE-2021-47320 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-2021-47320

Medium

In the Linux kernel, the following vulnerability has been resolved: nfs: fix acl memory leak of posix_acl_create() When looking into another nfs xfstests report, I found acl and default_acl in nfs3_proc_create() and nfs3_proc_mknod() error paths are possibly leaked. Fix them in advance.

Package Linux Kernel

Published 2024-05-21

Last modified 2024-12-24

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-2021-47320 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 3.14 and later are affected. Fixed in 4.4.276, 4.9.276, 4.14.240, 4.19.198, 5.4.134, 5.10.52, 5.12.19, 5.13.4, 5.14 and their respective stable series.

Affected from

≥ 3.14

Fixed in

✓ 4.4.276 4.4.x ✓ 4.9.276 4.9.x ✓ 4.14.240 4.14.x ✓ 4.19.198 4.19.x ✓ 5.4.134 5.4.x ✓ 5.10.52 5.10.x ✓ 5.12.19 5.12.x ✓ 5.13.4 5.13.x ✓ 5.14

References

9 total

Kernel Git
https://git.kernel.org/stable/c/0704f617040c397ae73c1f88f3956787ec5d6529

Patch
Kernel Git
https://git.kernel.org/stable/c/1fcb6fcd74a222d9ead54d405842fc763bb86262

Patch
Kernel Git
https://git.kernel.org/stable/c/2e3960f276b4574a9bb0dfa31a7497302f6363b2

Patch
Kernel Git
https://git.kernel.org/stable/c/4b515308ab875c7e8ada8e606fe0c64762da5ed4

Patch
Kernel Git
https://git.kernel.org/stable/c/687cf32865b2d6960214bce523f2afac58dd3cd2

Patch

Showing 5 of 9 references View all on NVD

Details

CVE ID CVE-2021-47320

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2024-12-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47320?

CVE-2021-47320 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 3.14 onward and has been patched in 4.4.276, 4.9.276, 4.14.240 and others. CVE-2021-47320 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47320?

CVE-2021-47320 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-2021-47320?

Yes. CVE-2021-47320 has been patched. Fixed versions include 4.4.276, 4.9.276, 4.14.240 and others. If you are running Linux kernel 3.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47320 actively exploited?

No. CVE-2021-47320 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.