What is CVE-2012-4565?

CVE-2012-4565 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10. CVE-2012-4565 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2012-4565?

CVE-2012-4565 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is AV:L/AC:M/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2012-4565?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2012-4565 patch availability.

Is CVE-2012-4565 actively exploited?

CVE-2012-4565 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2012-4565

Medium

The tcp_illinois_info function in net/ipv4/tcp_illinois.c in the Linux kernel before 3.4.19, when the net.ipv4.tcp_congestion_control illinois setting is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) by reading TCP stats.

Package Linux Kernel

Published 2012-12-21

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

None

Integrity

None

Availability

Vector string

AV:L/AC:M/Au:N/C:N/I:N/A:C

Weakness type

CWE-189

CVE-2012-4565 is classified as CWE-189

See CWE-189 on MITRE CWE for full details on this weakness type.

References

18 total

Showing 5 of 18 references View all on NVD

Details

CVE ID CVE-2012-4565

Severity Medium

CVSS score 4.7 / 10

CVSS version 2.0

Published 2012-12-21

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2012-4565?

CVE-2012-4565 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 . CVE-2012-4565 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2012-4565?

CVE-2012-4565 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:M/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2012-4565?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2012-4565 patch availability.
Is CVE-2012-4565 actively exploited?

No. CVE-2012-4565 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.