CVE-2024-56643

FAUCET Score

CVE-2024-56643 is a memory leak vulnerability in the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation. Specifically, it occurs when a new SP feature value is accepted but not reconciled, leading to unallocated memory not being freed. This affects Linux kernel versions utilizing DCCP. The vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact (denial of service) without affecting confidentiality or integrity. Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage are minimal, suggesting low public awareness and attention.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 2.6.29, < 5.4.287CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 5.5, < 5.10.231CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 5.11, < 5.15.174CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 5.16, < 6.1.120CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 6.2, < 6.6.66CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Exploitability Score

1.8

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.23%

Probability of exploitation in next 30 days

EPSS Percentile

13.6%

Percentile rank of EPSS score among Peer Group

As of 2026-07-28

Model: v2026.06.15

This CVE's current EPSS score of 0.0023 is in the 60th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (24)

autodeskpatch availablevia llm_extracted

View patch

freepbxpatch availablevia llm_extracted

View patch

honeywellpatch availablevia llm_extracted

View patch

microsoftpatch availablevia msrc

Product: 17476-17084Fixed in: 6.6.76.1-1

microsoftpatch availablevia msrc

Product: 17501-17084Fixed in: 6.6.76.1-1

microsoftpatch availablevia msrc

Product: azl3 kernel 6.6.64.2-9 on Azure Linux 3.0Fixed in: 6.6.76.1-1

microsoftpatch availablevia msrc

Product: 17110-16823Fixed in: 5.15.176.3-1

microsoftpatch availablevia msrc

Product: 19675-17086Fixed in: 5.15.176.3-1

microsoftpatch availablevia msrc

Product: cbl2 kernel 5.15.176.3-1 on CBL Mariner 2.0Fixed in: 5.15.176.3-1

microsoftpatch availablevia msrc

Product: cbl2 kernel 5.15.173.1-2 on CBL Mariner 2.0Fixed in: 5.15.176.3-1

microsoftpatch availablevia msrc

Product: azl3 kernel 6.6.76.1-1 on Azure Linux 3.0Fixed in: 6.6.76.1-1