What is CVE-2021-38300?

CVE-2021-38300 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2021-38300 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-38300?

CVE-2021-38300 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-2021-38300?

No patch is currently available for CVE-2021-38300. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-38300 actively exploited?

CVE-2021-38300 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-38300

High

arch/mips/net/bpf_jit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architecture.

Package Linux Kernel

Published 2021-09-20

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

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

References

The following references provide additional information about CVE-2021-38300 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10

Mailing List Vendor Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html

Third Party Advisory
Security
https://security.netapp.com/advisory/ntap-20211008-0003/

Third Party Advisory
Debian Security
https://www.debian.org/security/2022/dsa-5096

Third Party Advisory
Kernel patch commit
http://www.openwall.com/lists/oss-security/2021/09/15/5
Patch
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=37cb28ec7d3a36a5bace7063a3dba633ab110f8b
Patch

Details

CVE ID CVE-2021-38300

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2021-09-20

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-38300?

CVE-2021-38300 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2021-38300 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-38300?

CVE-2021-38300 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-2021-38300?

No patch is currently available for CVE-2021-38300. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-38300 actively exploited?

No — CVE-2021-38300 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.