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CVE-2024-40906

22
FAUCET Score

CVE-2024-40906 is a Use-After-Free (UAF) vulnerability in the Linux kernel's mlx5 network driver. It occurs during driver removal if the teardown_hca function fails, leading to the health timer continuing to operate on freed resources and causing a page fault (kernel crash). This vulnerability is rated 7.8 HIGH (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating that a local attacker with low privileges could achieve high confidentiality, integrity, and availability impacts. There is currently no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.1, < 6.1.95CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 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:*:*:*:*:*:*:*:*
6.10CPE 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

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
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 59th 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 (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-553.53.1.rt7.394.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-553.53.1.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-503.11.1.el9_5
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2024-40906Moderate

kernel: net/mlx5: Always stop health timer during driver removal

Jul 12, 2024

References

git.kernel.org / stable/c/6ccada6ffb42e0ac75e3db06d41baf5a7f483f8a
Patch
git.kernel.org / stable/c/c8b3f38d2dae0397944814d691a419c451f9906f
Patch
git.kernel.org / stable/c/e6777ae0bf6fd5bc626bb051c8c93e3c8198a3f8
Patch
git.kernel.org / stable/c/e7d4485d47839f4d1284592ae242c4e65b2810a9
Patch
lists.debian.org / debian-lts-announce/2025/01/msg00001.html