What is CVE-2021-47048?

CVE-2021-47048 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 5.10 onward and patched in 5.10.37, 5.11.21, 5.12.4 and others. CVE-2021-47048 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47048?

CVE-2021-47048 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2021-47048?

Yes, CVE-2021-47048 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-2021-47048 actively exploited?

CVE-2021-47048 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2021-47048

High

In the Linux kernel, the following vulnerability has been resolved: spi: spi-zynqmp-gqspi: fix use-after-free in zynqmp_qspi_exec_op When handling op->addr, it is using the buffer "tmpbuf" which has been freed. This will trigger a use-after-free KASAN warning. Let's use temporary variables to store op->addr.val and op->cmd.opcode to fix this issue.

Package Linux Kernel

Published 2024-02-28

Last modified 2024-12-09

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2021-47048 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

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/1231279389b5e638bc3b66b9741c94077aed4b5a

Patch
Kernel Git
https://git.kernel.org/stable/c/23269ac9f123eca3aea7682d3345c02e71ed696c

Patch
Kernel Git
https://git.kernel.org/stable/c/a2c5bedb2d55dd27c642c7b9fb6886d7ad7bdb58

Patch
Kernel Git
https://git.kernel.org/stable/c/d67e0d6bd92ebbb0294e7062bbf5cdc773764e62

Patch

Details

CVE ID CVE-2021-47048

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-02-28

Modified 2024-12-09

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47048?

CVE-2021-47048 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . 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-2021-47048 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47048?

CVE-2021-47048 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2021-47048?

Yes. CVE-2021-47048 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-2021-47048 actively exploited?

No. CVE-2021-47048 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.