Vulnary
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Critical· 9.4official fix available

CVE-2025-38120

A critical bug in the Linux kernel’s netfilter component could let attackers read or alter sensitive data and disrupt services. The issue has been fixed in recent kernel updates. Users should update their kernel to the patched version.

publishedJul 3, 2025
last modifiedJul 30, 2026
sourcesNVD
severity · cvss
9.4
critical · how bad it is
exploitation · epss
<1%
35th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Aug 29, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

Linux kernel (including Debian 11.0)

02

Real-world impact

An attacker could read or modify confidential data and cause service disruptions.

03

Why this severity

The CVSS score of 9.4 reflects that the flaw can be exploited over the network with no special privileges, and it can compromise confidentiality and integrity of data, while only slightly affecting availability.

04

What to do about it

official fix available
recommended steps
  1. 01Upgrade your Linux kernel to a version that includes the nf_set_pipapo_avx2 patch.
  2. 02Reboot the system to load the new kernel.

NVD-referenced vendor advisory

05

Timeline

  1. Jul 3, 2025 · Jul 3, 2025
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 30, 2026 · 7d ago
    Advisory updated
    The NVD record was last revised.
  3. Jul 30, 2026 · 6d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactLow
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →