CVE-2025-9640

MEDIUM

Samba - Info Disclosure

Title source: llm

Description

A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized heap memory could be written into alternate data streams. This allows an authenticated user to read residual memory content that may include sensitive data, resulting in an information disclosure vulnerability.

References (6)

Core 6

Core References

Mailing List

https://lists.debian.org/debian-lts-announce/2025/11/msg00027.html

Various Sources

https://www.samba.org/samba/history/security.html

Mailing List

http://www.openwall.com/lists/oss-security/2025/10/15/2

Mailing List

http://www.openwall.com/lists/oss-security/2025/10/16/2

Vendor Advisory vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2025-9640

Issue Tracking issue-tracking x_refsource_redhat

https://bugzilla.redhat.com/show_bug.cgi?id=2391698

Scores

CVSS v3 4.3

EPSS 0.0042

EPSS Percentile 33.5%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-908

Status published

Products (6)

Red Hat/Red Hat Enterprise Linux 10

Red Hat/Red Hat Enterprise Linux 6

Red Hat/Red Hat Enterprise Linux 7

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

Red Hat/Red Hat OpenShift Container Platform 4

Published Oct 15, 2025

Tracked Since Feb 18, 2026