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CVE-2023-53632

20
FAUCET Score

CVE-2023-53632 is a vulnerability in the Linux kernel's mlx5e network driver, specifically concerning the handling of XDP features. It arises when the xdp_set_features() function is called on a registered network device without holding the necessary RTNL lock, which can trigger netdev notifiers and lead to an assertion failure. This issue primarily affects Linux kernel versions where the mlx5e driver is in use. The vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring local privileges. The potential impact is a high availability loss, as demonstrated by the assertion failure and system crash observed in the provided call trace. There is no confidentiality or integrity impact. Currently, there is no evidence of active exploitation, nor is exploit code publicly available on platforms like Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting it has not garnered significant attention from the broader security community.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.3.1, < 6.4.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.3:-:*:*:*:*:*:*
6.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:*
6.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:*
6.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.3:rc5:*:*:*:*:*:*

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
0.17%
Probability of exploitation in next 30 days
EPSS Percentile
6.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0017 is in the 36th 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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-427.13.1.el9_4
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2023-53632Moderate

kernel: net/mlx5e: Take RTNL lock when needed before calling xdp_set_features()

Oct 7, 2025

References

git.kernel.org / stable/c/16b7775ae4389dd1e885732ea610321c64284e5f
Patch
git.kernel.org / stable/c/72cc654970658e88a1cdea08f06b11c218efa4da
Patch