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CVE-2025-71074

21
FAUCET Score

CVE-2025-71074 is a use-after-free vulnerability in the Linux kernel's functionfs component, specifically affecting how it handles the opening and removal of dynamic files. This race condition could lead to an attacker accessing freed memory, potentially causing system instability or arbitrary code execution. While no CVSS score is provided, its FAUCET Risk Score of 39/100 suggests a moderate severity. There is no evidence of active exploitation, and no public exploit code or Metasploit/Nuclei modules are available, though it has garnered significant community discussion with 10 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.6.35.1, < 6.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
2.6.35CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.35:-:*:*:*:*:*:*
6.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
6.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
6.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.09%
Probability of exploitation in next 30 days
EPSS Percentile
0.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0009 is in the 11th percentile among its peer group of 1,297 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (2)

microsoft2026-Jan/CVE-2025-71074Critical

functionfs: fix the open/removal races

Jan 13, 2026
redhatCVE-2025-71074

kernel: functionfs: fix the open/removal races

Jan 13, 2026

References

git.kernel.org / stable/c/e5bf5ee266633cb18fff6f98f0b7d59a62819eee
Patch