USN-7564-1

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-7564-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7564-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7564-1
Upstream
Related
Published
2025-06-10T13:30:31.459453Z
Modified
2025-07-16T08:36:18.852039Z
Summary
samba vulnerability
Details

It was discovered that Samba incorrectly handled certain group membership changes when using Kerberos authentication. A remote user could possibly use this issue to continue to access resources after being removed by an administrator.

References

Affected packages

Ubuntu:25.04 / samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba@2:4.21.4+dfsg-1ubuntu3.1?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.21.4+dfsg-1ubuntu3.1

Affected versions

2:4.*

2:4.20.4+dfsg-1ubuntu1
2:4.20.4+dfsg-1ubuntu2
2:4.20.4+dfsg-1ubuntu3
2:4.20.4+dfsg-1ubuntu5
2:4.21.4+dfsg-1ubuntu2
2:4.21.4+dfsg-1ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ctdb",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "ctdb-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "ldb-tools",
            "binary_version": "2:2.10.0+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "ldb-tools-dbgsym",
            "binary_version": "2:2.10.0+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libldb-dev",
            "binary_version": "2:2.10.0+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libldb2",
            "binary_version": "2:2.10.0+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libldb2-dbgsym",
            "binary_version": "2:2.10.0+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libnss-winbind-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libpam-winbind-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libsmbclient-dev",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libsmbclient0",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libsmbclient0-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libtalloc-dev",
            "binary_version": "2:2.4.2+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libtalloc2",
            "binary_version": "2:2.4.2+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libtalloc2-dbgsym",
            "binary_version": "2:2.4.2+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libtdb-dev",
            "binary_version": "2:1.4.12+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libtdb1",
            "binary_version": "2:1.4.12+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libtdb1-dbgsym",
            "binary_version": "2:1.4.12+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libtevent-dev",
            "binary_version": "2:0.16.1+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libtevent0t64",
            "binary_version": "2:0.16.1+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libtevent0t64-dbgsym",
            "binary_version": "2:0.16.1+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libwbclient-dev",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "libwbclient0-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "python3-ldb",
            "binary_version": "2:2.10.0+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "python3-ldb-dbgsym",
            "binary_version": "2:2.10.0+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "python3-samba",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "python3-samba-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "python3-talloc",
            "binary_version": "2:2.4.2+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "python3-talloc-dbgsym",
            "binary_version": "2:2.4.2+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "python3-tdb",
            "binary_version": "2:1.4.12+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "python3-tdb-dbgsym",
            "binary_version": "2:1.4.12+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "registry-tools-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-ad-dc",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-ad-dc-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-ad-provision",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-common-bin-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-dev",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-dsdb-modules-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-libs-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-testsuite-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-vfs-ceph",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-vfs-ceph-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-vfs-glusterfs",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-vfs-glusterfs-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "samba-vfs-modules-extra",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "smbclient-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "tdb-tools",
            "binary_version": "2:1.4.12+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "tdb-tools-dbgsym",
            "binary_version": "2:1.4.12+samba4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        },
        {
            "binary_name": "winbind-dbgsym",
            "binary_version": "2:4.21.4+dfsg-1ubuntu3.1"
        }
    ],
    "availability": "No subscription required"
}