What is CVE-2021-47057?

CVE-2021-47057 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.10 onward and patched in 5.10.37, 5.11.21, 5.12.4 and others. CVE-2021-47057 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47057?

CVE-2021-47057 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-2021-47057?

Yes, CVE-2021-47057 has been patched. Fixed versions include 5.10.37, 5.11.21, 5.12.4 and others. If you are running Linux kernel 5.10 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47057 actively exploited?

CVE-2021-47057 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47057

Medium

In the Linux kernel, the following vulnerability has been resolved: crypto: sun8i-ss - Fix memory leak of object d when dma_iv fails to map In the case where the dma_iv mapping fails, the return error path leaks the memory allocated to object d. Fix this by adding a new error return label and jumping to this to ensure d is free'd before the return. Addresses-Coverity: ("Resource leak")

Package Linux Kernel

Published 2024-02-29

Last modified 2025-03-19

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-770

CVE-2021-47057 is classified as CWE-770

See CWE-770 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 5.10 and later are affected. Fixed in 5.10.37, 5.11.21, 5.12.4, 5.13 and their respective stable series.

Affected from

≥ 5.10

Fixed in

✓ 5.10.37 5.10.x ✓ 5.11.21 5.11.x ✓ 5.12.4 5.12.x ✓ 5.13

References

4 total

Kernel Git
https://git.kernel.org/stable/c/617ec35ed51f731a593ae7274228ef2cfc9cb781

Patch
Kernel Git
https://git.kernel.org/stable/c/6516cb852d704ff8d615de1f93cd443a99736c3d

Patch
Kernel Git
https://git.kernel.org/stable/c/98b5ef3e97b16eaeeedb936f8bda3594ff84a70e

Patch
Kernel Git
https://git.kernel.org/stable/c/e1f2d739849c3239df1ea3f97d40bade4b808410

Patch

Details

CVE ID CVE-2021-47057

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-02-29

Modified 2025-03-19

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47057?

CVE-2021-47057 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.10 onward and has been patched in 5.10.37, 5.11.21, 5.12.4 and others. CVE-2021-47057 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47057?

CVE-2021-47057 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-2021-47057?

Yes. CVE-2021-47057 has been patched. Fixed versions include 5.10.37, 5.11.21, 5.12.4 and others. If you are running Linux kernel 5.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47057 actively exploited?

No. CVE-2021-47057 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.