What is CVE-2021-47486?

CVE-2021-47486 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2021-47486 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47486?

CVE-2021-47486 has a CVSS score of 7.5 out of 10, rated High severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-47486?

No patch is currently available for CVE-2021-47486. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47486 actively exploited?

CVE-2021-47486 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2021-47486

High

In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fix potential NULL dereference The bpf_jit_binary_free() function requires a non-NULL argument. When the RISC-V BPF JIT fails to converge in NR_JIT_ITERATIONS steps, jit_data->header will be NULL, which triggers a NULL dereference. Avoid this by checking the argument, prior calling the function.

Package Linux Kernel

Published 2024-05-22

Last modified 2025-04-01

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.5

out of 10

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-476

CVE-2021-47486 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2021-47486 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41
Patch

Details

CVE ID CVE-2021-47486

Severity High

CVSS score 7.5 / 10

CVSS version 3.1

Published 2024-05-22

Modified 2025-04-01

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47486?

CVE-2021-47486 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2021-47486 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47486?

CVE-2021-47486 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-47486?

No patch is currently available for CVE-2021-47486. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47486 actively exploited?

No — CVE-2021-47486 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. View CWE-476 on MITRE CWE →