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CVE-2025-38017

15
FAUCET Score

CVE-2025-38017 is a Linux kernel vulnerability affecting the eventpoll subsystem, specifically related to epoll_pwait2. A flaw introduced by a previous commit could lead to an endless busy loop in the kernel when a very short timeout expires, causing system instability, soft lockups, RCU stalls, and deadlocks. This vulnerability is rated Medium severity (CVSS 5.5) due to its local attack vector (AV:L), low attack complexity (AC:L), and high impact on availability (A:H). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.14.4, < 6.14.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*
6.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*
6.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*
6.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:*

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
3.8%
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 24th percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 Patches (3)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2025-38017Moderate

kernel: Linux kernel: Denial of Service via endless busy loop in eventpoll

Jun 18, 2025

References

git.kernel.org / stable/c/7631dca012593c95d36199082546a24a0058fc50
Patch
git.kernel.org / stable/c/d9ec73301099ec5975505e1c3effbe768bab9490
Patch