Description
A flaw was found in Samba. The security vulnerability occurs when KDC and the kpasswd service share a single account and set of keys, allowing them to decrypt each other's tickets. A user who has been requested to change their password, can exploit this flaw to obtain and use tickets to other services.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | samba | Versions prior to samba 4.16.4, samba 4.15.9, samba 4.14.14 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | samba | 2:4.16.4+dfsg-1 | — |
| Debian 13 | samba | 2:4.16.4+dfsg-1 | — |
| Debian 12 | samba | 2:4.16.4+dfsg-1 | — |
| Debian 11 | samba | 2:4.13.13+dfsg-1~deb11u5 | DSA-5205-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | samba | 2:4.15.9+dfsg-0ubuntu0.2 | USN-5542-1 |
| Ubuntu 20.04 LTS | samba | 2:4.13.17~dfsg-0ubuntu1.20.04.1 | USN-5542-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | samba | No fix yet | — |
| Ubuntu Pro 16.04 LTS | samba | No fix yet | — |
| Ubuntu Pro 14.04 LTS | samba | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | ldb | 2.4.3-150400.4.8.1 | SUSE-SU-2022:2659-1 |
| SLES 15 SP4 | samba | 4.15.8+git.500.d5910280cc7-150400.3.11.1 | SUSE-SU-2023:0160-1, SUSE-SU-2022:2659-1 |
| SLES 15 SP3 | ldb | 2.4.3-150300.3.20.1 | SUSE-SU-2022:2586-1 |
| SLES 15 SP3 | samba | 4.15.8+git.500.d5910280cc7-150300.3.37.1 | SUSE-SU-2022:4395-1, SUSE-SU-2022:2586-1 |
| SLES 12 SP5 | samba | 4.15.8+git.462.e73f4310487-3.68.1 | SUSE-SU-2023:0081-1, SUSE-SU-2022:2582-1 |
| SLES 2 | samba | 4.15.8+git.500.d5910280cc7-150300.3.37.1 | SUSE-SU-2022:4395-1, SUSE-SU-2022:2586-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | samba | 4.15.8+git.462.e73f4310487-3.68.1 | SUSE-SU-2023:0081-1, SUSE-SU-2022:2582-1 |
| SLE Micro 5.3 | samba | 4.15.13+git.591.ab36624310c-150400.3.19.1 | SUSE-SU-2023:0160-1 |
| SLE Micro 5.2 | ldb | 2.4.3-150300.3.20.1 | SUSE-SU-2022:2586-1 |
| SLE Micro 5.2 | samba | 4.15.8+git.500.d5910280cc7-150300.3.37.1 | SUSE-SU-2022:4395-1, SUSE-SU-2022:2586-1 |
| SLE Micro 5.1 | ldb | 2.4.3-150300.3.20.1 | SUSE-SU-2022:2586-1 |
| SUSE Enterprise Storage 7.1 | ldb | 2.4.3-150300.3.20.1 | SUSE-SU-2022:2586-1 |
| SUSE Enterprise Storage 7.1 | samba | 4.15.8+git.500.d5910280cc7-150300.3.37.1 | SUSE-SU-2022:4395-1, SUSE-SU-2022:2586-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | samba | 4.16.4+git.297.1497eb221ed-1.1 | openSUSE-SU-2024:12243-1 |
| openSUSE Leap 15.4 | ldb | 2.4.3-150400.4.8.1 | SUSE-SU-2022:2659-1 |
| openSUSE Leap 15.4 | samba | 4.15.8+git.500.d5910280cc7-150400.3.11.1 | SUSE-SU-2023:0160-1, SUSE-SU-2022:2659-1 |
| openSUSE Leap 15.3 | ldb | 2.4.3-150300.3.20.1 | SUSE-SU-2022:2586-1 |
| openSUSE Leap 15.3 | samba | 4.15.8+git.500.d5910280cc7-150300.3.37.1 | SUSE-SU-2022:4395-1, SUSE-SU-2022:2586-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | samba | 4.15.13+git.591.ab36624310c-150400.3.19.1 | SUSE-SU-2023:0160-1 |
| openSUSE Leap Micro 5.2 | ldb | 2.4.3-150300.3.20.1 | SUSE-SU-2022:2586-2 |
| openSUSE Leap Micro 5.2 | samba | 4.15.8+git.500.d5910280cc7-150300.3.37.1 | SUSE-SU-2022:4395-1, SUSE-SU-2022:2586-2 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | samba | 4.15.9-r0 | — |
| Alpine v3.23 | samba | 4.15.9-r0 | — |
| Alpine v3.22 | samba | 4.15.9-r0 | — |
| Alpine v3.21 | samba | 4.15.9-r0 | — |
| Alpine v3.20 | samba | 4.15.9-r0 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | samba | 4.15.9-r0 | — |
| Alpine v3.18 | samba | 4.15.9-r0 | — |
| Alpine v3.17 | samba | 4.15.9-r0 | — |
| Alpine v3.16 | samba | 4.15.12-r0 | — |
| Alpine v3.15 | samba | 4.15.12-r0 | — |
| Alpine v3.14 | samba | 4.14.14-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | samba | 4.18.3-1 | — |
| Azure Linux 2 (CBL-Mariner) | samba | No fix yet | — |
Advisories 11
- WID-SEC-2022-0842 Samba: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 31, 2026
- USN-5542-1 samba vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5205-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2022:2582-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2586-1 Security update for ldb, samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4395-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2586-2 Security update for ldb, samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0081-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0160-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12243-1 ctdb-4.16.4+git.297.1497eb221ed-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2659-1 Security update for ldb, samba SUSE / openSUSE Security Updates · Feb 4, 2026