CVE-2025-9640: Samba: vfs_streams_xattr uninitialized memory write possible
A flaw was found in Samba
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/sambato a version that resolves this vulnerability.Fixed in 2:4.17.12+dfsg-0+deb12u3 - Upgrade
Upgrade
debian/sambato a version that resolves this vulnerability.Fixed in 2:4.22.6+dfsg-0+deb13u1 - Upgrade
Upgrade
debian/sambato a version that resolves this vulnerability.Fixed in 2:4.23.2+dfsg-1 - Upgrade
Upgrade
debian/sambato a version that resolves this vulnerability.Fixed in 2:4.17.12+dfsg-0+deb12u4Fixed in 2:4.22.11+dfsg-0+deb13u1Fixed in 2:4.22.10+dfsg-0+deb13u2Fixed in 2:4.25.1+dfsg-1
Event History
Frequently Asked Questions
What is the severity of CVE-2025-9640?
CVE-2025-9640 is classified as a medium severity vulnerability due to its potential for information disclosure.
How do I fix CVE-2025-9640?
To fix CVE-2025-9640, update to the latest version of Samba that addresses this vulnerability.
Who is affected by CVE-2025-9640?
CVE-2025-9640 affects systems running the Samba vfs_streams_xattr module.
What type of vulnerability is CVE-2025-9640?
CVE-2025-9640 is an information disclosure vulnerability caused by uninitialized heap memory in Samba.
Can CVE-2025-9640 be exploited remotely?
CVE-2025-9640 requires authentication, meaning it cannot be exploited remotely without valid user credentials.