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CVE-2024-44934

23
FAUCET Score

CVE-2024-44934 is a use-after-free vulnerability in the Linux kernel's bridge multicast component, specifically affecting the net: bridge: mcast module. This flaw occurs when a port is removed without ensuring all previous garbage collection cycles have completed, leading to a race condition where the port can be freed while its group timers are still active. Rated with a CVSS score of 7.8 (High), this vulnerability has a local attack vector and low attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. Currently, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.10, < 5.15.165CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.105CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 6.6.46CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.7, < 6.10.5CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
12.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 41st percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

codesyspatch availablevia llm_extracted
View patch
esphomepatch availablevia llm_extracted
View patch
microsoftpatch availablevia msrc
Product: 17250-17086Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: 17207-16823Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: 19670-17086Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.167.1-1 on CBL Mariner 2.0Fixed in: 5.15.167.1-1
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.164.1-1 on CBL Mariner 2.0Fixed in: 5.15.167.1-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-570.12.1.el9_6
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel

Vendor Advisories (5)

codesysllm-codesys-fe85e88fbae25bb9CRITICAL

HP ThinPro 8.1 SP7 Security Updates

Jun 3, 2025
esphomellm-esphome-ed450ce9fd6a7380CRITICAL

HP ThinPro 8.1 SP7 Security Updates

Jun 3, 2025
microsoft2024-Oct/CVE-2024-44934

CVE-2024-44934

Oct 8, 2024
redhatCVE-2024-44934Moderate

kernel: net: bridge: mcast: wait for previous gc cycles when removing port

Aug 26, 2024
microsoft2024-Aug/CVE-2024-44934Important

net: bridge: mcast: wait for previous gc cycles when removing port

Aug 13, 2024

References

git.kernel.org / stable/c/0d8b26e10e680c01522d7cc14abe04c3265a928f
Patch
git.kernel.org / stable/c/1e16828020c674b3be85f52685e8b80f9008f50f
Patch
git.kernel.org / stable/c/92c4ee25208d0f35dafc3213cdf355fbe449e078
Patch
git.kernel.org / stable/c/b2f794b168cf560682ff976b255aa6d29d14a658
Patch
git.kernel.org / stable/c/e3145ca904fa8dbfd1a5bf0187905bc117b0efce
Patch
lists.debian.org / debian-lts-announce/2025/01/msg00001.html