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CVE-2025-38561

Linux Kernel race condition

9.8 CRITICALEPSS 0.43%
  1. Published19 Aug 2025

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix Preauh_HashValue race condition If client send multiple session setup requests to ksmbd, Preauh_HashValue race condition could happen. There is no need to free sess->Preauh_HashValue at session setup phase. It can be freed together with session at connection termination phase.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Debian Linux11.0
Linux Kernel≥ 5.15 < 6.1.148 · ≥ 6.13 < 6.15.10 · ≥ 6.16 < 6.16.1 · ≥ 6.2 < 6.6.102

Remediation

Fixed in
Linux Kernel≥ 6.1.148

References

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Frequently asked

Is CVE-2025-38561 being actively exploited?

CVE-2025-38561 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.43%.

How severe is CVE-2025-38561?

CVE-2025-38561 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.43% probability of exploitation.

Which products are affected by CVE-2025-38561?

Affected products include Debian Linux, Linux Kernel.

How do I fix CVE-2025-38561?

Upgrade affected software to a fixed version, for example Linux Kernel 6.1.148 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-38561 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.