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CVE-2025-38726

20
FAUCET Score

CVE-2025-38726 addresses a NULL pointer dereference vulnerability in the Linux kernel's ftgmac100 network driver. Specifically, the issue arises when phy_disconnect() is called, inadvertently nullifying netdev->phydev before fixed_phy_unregister() is invoked, leading to a potential system crash. This vulnerability is rated Medium severity (CVSS 5.5), requiring local access and low privileges to achieve a high impact on availability, likely through a denial-of-service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.12, < 6.12.43CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.13, < 6.15.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.16, < 6.16.2CPE 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
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
3.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 22nd 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

Vendor Advisories (1)

redhatCVE-2025-38726

kernel: net: ftgmac100: fix potential NULL pointer access in ftgmac100_phy_disconnect

Sep 4, 2025

References

git.kernel.org / stable/c/44bcd397ad9cd1a6b25fabb7f5edbee4fb0cfc2e
Patch
git.kernel.org / stable/c/9ad90dd34b4e8e5be1e45a4559f4de0f14e53af2
Patch
git.kernel.org / stable/c/ae59ec969c07c73f0610f8bd7e648f01e798d222
Patch
git.kernel.org / stable/c/e88fbc30dda1cb7438515303704ceddb3ade4ecd
Patch