CVE-2025-38445

FAUCET Score

CVE-2025-38445 describes a use-after-return vulnerability in the Linux kernel's RAID1 reshape function, affecting Debian and other Linux kernel distributions. A stack-allocated memory pool is incorrectly assigned to a global configuration, leading to a kernel panic when accessed after the stack frame is deallocated. This vulnerability has a CVSS score of 7.1 (HIGH), indicating a local attack vector with low complexity that can lead to high availability impact (kernel panic). While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, suggesting it is on security researchers' radar.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 4.18, < 5.4.296CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 5.5, < 5.10.240CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 5.11, < 5.15.189CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 5.16, < 6.1.146CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 6.2, < 6.6.99CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

Exploitability Score

1.8

Impact Score

5.2

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.17%

Probability of exploitation in next 30 days

EPSS Percentile

6.2%

Percentile rank of EPSS score among Peer Group

As of 2026-07-28

Model: v2026.06.15

This CVE's current EPSS score of 0.0016 is in the 27th percentile among its peer group of 17,070 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

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 (16)

microsoftpatch availablevia msrc

Product: cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0Fixed in: 5.15.200.1-1

microsoftpatch availablevia msrc

Product: azl3 kernel 6.6.96.2-2 on Azure Linux 3.0Fixed in: 6.6.104.2-1

microsoftpatch availablevia msrc

Product: 17087-17086Fixed in: 5.15.200.1-1

microsoftpatch availablevia msrc

Product: 20412-17084Fixed in: 6.6.104.2-1