Vulnary
← back to the feed
Critical· 9.8official fix available

CVE-2025-38325

This vulnerability in the Linux kernel’s ksmbd component could cause the system to crash (kernel oops) when a TCP connection is freed. The issue has been fixed by adding proper free_transport operations. Users should update to a patched kernel version to avoid crashes.

publishedJul 10, 2025
last modifiedJul 30, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
<1%
32th 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 6.15 and 6.16 (and earlier versions).

02

Real-world impact

An attacker could trigger a kernel crash, causing a denial of service and system downtime.

03

Why this severity

The CVSS score of 9.8 reflects the high impact of a complete denial of service with no authentication or user interaction required.

04

What to do about it

official fix available
recommended steps
  1. 01Upgrade your Linux kernel to a version that includes the ksmbd free_transport ops patch (e.g., 6.15 or later).
  2. 02Reboot the system to load the updated kernel.

NVD description

05

Timeline

  1. Jul 10, 2025 · Jul 10, 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 impactHigh
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 →