CVE-2021-38209

Low

net/netfilter/nf_conntrack_standalone.c in the Linux kernel before 5.12.2 allows observation of changes in any net namespace because these changes are leaked into all other net namespaces. This is related to the NF_SYSCTL_CT_MAX, NF_SYSCTL_CT_EXPECT_MAX, and NF_SYSCTL_CT_BUCKETS sysctls.

Package Linux Kernel
Published 2021-08-08
Last modified 2024-11-21
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

3.3

out of 10
Low
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness type

CWE-203

CVE-2021-38209 is classified as CWE-203

See CWE-203 on MITRE CWE for full details on this weakness type.

References

2 total

Frequently asked questions

  • What is CVE-2021-38209?

    CVE-2021-38209 is a Low severity Linux kernel vulnerability with a CVSS score of 3.3 out of 10 . CVE-2021-38209 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2021-38209?

    CVE-2021-38209 has a CVSS score of 3.3 out of 10, rated Low severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N .

  • Is there a patch available for CVE-2021-38209?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-38209 patch availability.

  • Is CVE-2021-38209 actively exploited?

    No. CVE-2021-38209 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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