4.3Medium

CVE-2025-9640Samba: vfs_streams_xattr uninitialized memory write possible

samba; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 6; Red Hat Red Hat Enterprise Linux 7 Published: (1 year ago)

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.

Weakness (CWE): CWE-908

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 all versions
Red Hat Red Hat Enterprise Linux 6 all versions
Red Hat Red Hat Enterprise Linux 7 all versions
Red Hat Red Hat Enterprise Linux 8 all versions
Red Hat Red Hat Enterprise Linux 9 all versions
Red Hat Red Hat OpenShift Container Platform 4 all versions
— samba < 4.21.9, 4.22.0 – < 4.21.5, 4.23.0 – < 4.23.2

References and patches