VDB
ALPINE-CVE-2018-16841
ALPINE-CVE-2018-16841
PUBLISHED
CVSS 6.5 MEDIUM
Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.21 | samba | 0, 0, 3.2.10-r0 |
| Alpine:v3.10 | samba | 0, 0, 4.8.5-r0 |
| Alpine:v3.22 | samba | 0, 0, 3.2.10-r0 |
| Alpine:v3.19 | samba | 0, 0, 3.2.10-r0 |
| Alpine:v3.16 | samba | 4.2.9-r1, 4.1.17-r0, 4.1.16-r0 |
| Alpine:v3.15 | samba | 4.8.5-r0, 4.1.6-r0, 4.1.7-r0 |
| Alpine:v3.12 | samba | 4.4.2-r1, 0, 3.2.10-r0 |
| Alpine:v3.18 | samba | 3.3.4-r0, 4.1.6-r0, 4.1.7-r0 |
| Alpine:v3.9 | samba | 3.3.8-r0, 0, 3.2.10-r0 |
| Alpine:v3.11 | samba | 4.7.0-r1, 0, 3.2.10-r0 |
| Alpine:v3.20 | samba | 0, 0, 3.2.10-r0 |
| Alpine:v3.23 | samba | 4.1.16-r0, 0, 3.2.10-r0 |
| Alpine:v3.14 | samba | 3.5.6-r0, 4.8.5-r0, 4.8.4-r1 |
| Alpine:v3.24 | samba | 0 |
| Alpine:v3.6 | samba | 3.3.5-r0, 4.2.1-r2, 4.2.3-r0 |
| Alpine:v3.17 | samba | 4.8.2-r0, 0, 4.8.5-r0 |
| Alpine:v3.13 | samba | 4.1.3-r0, 4.1.3-r1, 4.1.4-r0 |
| Alpine:v3.8 | samba | 4.6.4-r0, 0, 3.2.10-r0 |
| Alpine:v3.7 | samba | 4.6.5-r0, 4.6.6-r0, 4.6.6-r1 |
Timeline
- Nov 28, 2018 CVE Published
- Apr 30, 2026 Distribution Patch
- Jun 9, 2026 CVE Updated