CVE-2025-9640
4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
0 < 4.21.9 | affected | ||
4.22.0 < 4.21.5 | affected | ||
4.23.0 < 4.23.2 | affected |
Weaknesses
- CWE-908: Use of Uninitialized Resource
Workarounds
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
CVE Program Container
Additional References
- http://www.openwall.com/lists/oss-security/2025/10/15/2
- http://www.openwall.com/lists/oss-security/2025/10/16/2
- https://lists.debian.org/debian-lts-announce/2025/11/msg00027.html
References
- https://access.redhat.com/security/cve/CVE-2025-9640
- https://bugzilla.redhat.com/show_bug.cgi?id=2391698
- https://www.samba.org/samba/history/security.html
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