CVE-2025-9640
Medium
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.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Samba
PublishedOct 15, 2025
First seenOct 15, 2025
Weakness typeCWE-908CWE-908
How to fix
Update
- samba4.21.9, 4.21.5, 4.23.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| samba | v < 4.21.9, 4.22.0 ≤ v < 4.21.5, 4.23.0 ≤ v < 4.23.2 | 4.21.9, 4.21.5, 4.23.2 |
| Red Hat Red Hat Enterprise Linux 10 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 6 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 7 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 8 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 9 | No range specified | — |
| Red Hat Red Hat OpenShift Container Platform 4 | No range specified | — |
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