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CVE-2025-38331

17
FAUCET Score

CVE-2025-38331 addresses a stability issue in the Linux kernel's Cortina ethernet driver, specifically impacting Debian and other Linux distributions. The vulnerability stems from an incomplete utilization of the hardware's TCP Offload Engine (TOE) and TCP Segmentation Offload (TSO) features, leading to driver instability, lock-ups, and crashes. Rated with a CVSS score of 5.5 MEDIUM, this vulnerability has a local attack vector (AV:L) and low attack complexity (AC:L), requiring local privileges (PR:L). Its primary impact is high availability loss (A:H), as the system can become unstable and crash, though confidentiality and integrity are not directly affected. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Despite the lack of exploit code, the vulnerability has garnered some community attention with two mentions and two media articles, indicating awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.16, < 6.1.142CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.2, < 6.6.95CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.7, < 6.12.35CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.13, < 6.15.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

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
4.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 26th 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

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 (8)

microsoftpatch availablevia msrc
Product: 19880-17084Fixed in: 6.6.96.1-1
microsoftpatch availablevia msrc
Product: azl3 kernel 6.6.92.2-2 on Azure Linux 3.0Fixed in: 6.6.96.1-1
ubuntupatch availablevia ubuntu_usn
Product: linux-ibm (noble)Fixed in: 6.8.0-1044.44
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-fips (noble)Fixed in: 6.8.0-1046.52+fips1
ubuntupatch availablevia ubuntu_usn
Product: linux-xilinx (noble)Fixed in: 6.8.0-1023.24
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-6.8 (jammy)Fixed in: 6.8.0-1051.57~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-azure (noble)Fixed in: 6.8.0-1046.52
ubuntupatch availablevia ubuntu_usn
Product: linux-ibm-6.8 (jammy)Fixed in: 6.8.0-1044.44~22.04.1

Vendor Advisories (7)

ubuntuUSN-8126-1

Linux kernel (Azure) vulnerabilities

Mar 25, 2026
ubuntuUSN-8074-2

Linux kernel (Azure FIPS) vulnerabilities

Mar 4, 2026
ubuntuUSN-8074-1

Linux kernel (Azure) vulnerabilities

Mar 4, 2026
ubuntuUSN-8052-2

Linux kernel (Xilinx) vulnerabilities

Feb 24, 2026
ubuntuUSN-8028-8

Linux kernel (IBM) vulnerabilities

Feb 24, 2026
redhatCVE-2025-38331

kernel: net: ethernet: cortina: Use TOE/TSO on all TCP

Jul 10, 2025
microsoft2025-Jul/CVE-2025-38331Moderate

net: ethernet: cortina: Use TOE/TSO on all TCP

Jul 8, 2025

References

git.kernel.org / stable/c/1b503b790109d19710ec83c589c3ee59e95347ec
Patch
git.kernel.org / stable/c/2bd434bb0eeb680c2b3dd6c68ca319b30cb8d47f
Patch
git.kernel.org / stable/c/6a07e3af4973402fa199a80036c10060b922c92c
Patch
git.kernel.org / stable/c/a37888a435b0737128d2d9c6f67b8d608f83df7a
Patch
git.kernel.org / stable/c/ebe12e232f1d58ebb4b53b6d9149962b707bed91
Patch
lists.debian.org / debian-lts-announce/2025/10/msg00008.html
Third Party Advisory