Is CVE-2021-38300 in the CISA KEV catalog?

No. CVE-2021-38300 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-38300?

CVE-2021-38300 has a CVSS v3 base score of 7.8 (HIGH).

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

CVE-2021-38300 has an EPSS score of 0.58% (43th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-38300?

Upgrade linux on debian 11 to 5.10.70-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-38300

HIGH

7.8

CVSS v3

NVD

Description

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.

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.70-1CVE-2021-38300

Fixed in:5.14.6-1CVE-2021-38300

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.58%probability of exploitation in 30 days

43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Patch2

Vendor Advisory1

cdn.kernel.org

Third-Party Advisory3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.