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.
Product status
Timeline
2025-08-29: | Reported to Red Hat. |
2025-10-15: | Made public. |
References
access.redhat.com/security/cve/CVE-2025-9640
bugzilla.redhat.com/show_bug.cgi?id=2391698 (RHBZ#2391698)
www.samba.org/samba/history/security.html