What is CVE-2021-45486?

CVE-2021-45486 is a Low severity Linux kernel vulnerability with a CVSS score of 3.5 out of 10. CVE-2021-45486 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-45486?

CVE-2021-45486 has a CVSS score of 3.5 out of 10, rated Low severity. The vector string is CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Is there a patch available for CVE-2021-45486?

No patch is currently available for CVE-2021-45486. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-45486 actively exploited?

CVE-2021-45486 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-45486

Low

In the IPv4 implementation in the Linux kernel before 5.12.4, net/ipv4/route.c has an information leak because the hash table is very small.

Package Linux Kernel

Published 2021-12-25

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

3.5

out of 10

Low

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Vector string

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

Weakness type

CWE-327

CVE-2021-45486 is classified as CWE-327

See CWE-327 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-45486 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Arxiv
https://arxiv.org/pdf/2112.09604.pdf

Technical Description Third Party Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4

Release Notes Vendor Advisory
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/net/ipv4/route.c?id=aa6dd211e4b1dde9d5dc25d699d35f789ae7eeba
Patch
Kernel patch commit
https://www.oracle.com/security-alerts/cpujul2022.html
Patch

Details

CVE ID CVE-2021-45486

Severity Low

CVSS score 3.5 / 10

CVSS version 3.1

Published 2021-12-25

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-45486?

CVE-2021-45486 is a Low severity Linux kernel vulnerability with a CVSS score of 3.5 out of 10 . CVE-2021-45486 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-45486?

CVE-2021-45486 has a CVSS score of 3.5 out of 10, rated Low severity (CVSS 3.1). The vector string is CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Is there a patch available for CVE-2021-45486?

No patch is currently available for CVE-2021-45486. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-45486 actively exploited?

No — CVE-2021-45486 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.