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CVE-2024-40923

17
FAUCET Score

CVE-2024-40923 is a vulnerability in the Linux kernel's vmxnet3 driver, specifically affecting virtual machines using VMware's network adapter. It occurs when memory allocation for the receive data ring fails, leading to the hypervisor referencing an improperly configured data ring during packet reception. This can result in a kernel crash, causing a denial of service. The vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low attack complexity, requiring low privileges, and resulting in high availability impact. There is no known impact on 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 for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.3.1, < 6.6.35CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.7, < 6.9.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.3:-:*:*:*:*:*:*
6.10CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
6.10CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*

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
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
21.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 77th 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 (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-503.11.1.el9_5
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2024-40923Moderate

kernel: vmxnet3: disable rx data ring on dma allocation failure

Jul 12, 2024

References

git.kernel.org / stable/c/9ee14af24e67ef170108db547f7d1f701b3f2bc5
Patch
git.kernel.org / stable/c/aa116ae9d169e28b692292460aed27fc44f4a017
Patch
git.kernel.org / stable/c/ffbe335b8d471f79b259e950cb20999700670456
Patch