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?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-45486 patch availability.

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

4 total

Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4

Release Notes Vendor Advisory
Kernel Git
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/net/ipv4/route.c?id=aa6dd211e4b1dde9d5dc25d699d35f789ae7eeba

Patch Vendor Advisory
Oracle
https://www.oracle.com/security-alerts/cpujul2022.html

Patch Third Party Advisory
Arxiv
https://arxiv.org/pdf/2112.09604.pdf

Technical Description Third Party Advisory

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?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-45486 patch availability.
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.