USN-3976-3
samba regression
USN-3976-1 fixed a vulnerability in Samba. The update introduced a regression causing Samba to occasionally crash. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Isaac Boukris and Andrew Bartlett discovered that Samba incorrectly checked S4U2Self packets. In certain environments, a remote attacker could possibly use this issue to escalate privileges.
What each source reports
OSV No score
samba regression
USN-3976-1 fixed a vulnerability in Samba. The update introduced a regression causing Samba to occasionally crash. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Isaac Boukris and Andrew Bartlett discovered that Samba incorrectly checked S4U2Self packets. In certain environments, a remote attacker could possibly use this issue to escalate privileges.
- Record
USN-3976-3- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
sambaUbuntu:16.04:LTS |
before 2:4.3.11+dfsg-0ubuntu0.16.04.21, plus listed versions 2:4.1.17+dfsg-4ubuntu22:4.1.20+dfsg-1ubuntu12:4.1.20+dfsg-1ubuntu22:4.1.20+dfsg-1ubuntu32:4.1.20+dfsg-1ubuntu5 Show 25 moreShow less2:4.3.3+dfsg-1ubuntu12:4.3.3+dfsg-1ubuntu22:4.3.3+dfsg-1ubuntu32:4.3.6+dfsg-1ubuntu12:4.3.8+dfsg-0ubuntu12:4.3.9+dfsg-0ubuntu0.16.04.12:4.3.9+dfsg-0ubuntu0.16.04.22:4.3.9+dfsg-0ubuntu0.16.04.32:4.3.11+dfsg-0ubuntu0.16.04.12:4.3.11+dfsg-0ubuntu0.16.04.32:4.3.11+dfsg-0ubuntu0.16.04.52:4.3.11+dfsg-0ubuntu0.16.04.62:4.3.11+dfsg-0ubuntu0.16.04.72:4.3.11+dfsg-0ubuntu0.16.04.82:4.3.11+dfsg-0ubuntu0.16.04.92:4.3.11+dfsg-0ubuntu0.16.04.102:4.3.11+dfsg-0ubuntu0.16.04.112:4.3.11+dfsg-0ubuntu0.16.04.122:4.3.11+dfsg-0ubuntu0.16.04.132:4.3.11+dfsg-0ubuntu0.16.04.152:4.3.11+dfsg-0ubuntu0.16.04.162:4.3.11+dfsg-0ubuntu0.16.04.172:4.3.11+dfsg-0ubuntu0.16.04.182:4.3.11+dfsg-0ubuntu0.16.04.192:4.3.11+dfsg-0ubuntu0.16.04.20 |
2:4.3.11+dfsg-0ubuntu0.16.04.21 |
sambaUbuntu:18.04:LTS |
before 2:4.7.6+dfsg~ubuntu-0ubuntu2.11, plus listed versions 2:4.6.7+dfsg-1ubuntu32:4.7.1+dfsg-1ubuntu12:4.7.3+dfsg-1ubuntu12:4.7.4+dfsg-1ubuntu12:4.7.6+dfsg~ubuntu-0ubuntu1 Show 8 moreShow less2:4.7.6+dfsg~ubuntu-0ubuntu22:4.7.6+dfsg~ubuntu-0ubuntu2.22:4.7.6+dfsg~ubuntu-0ubuntu2.42:4.7.6+dfsg~ubuntu-0ubuntu2.52:4.7.6+dfsg~ubuntu-0ubuntu2.62:4.7.6+dfsg~ubuntu-0ubuntu2.72:4.7.6+dfsg~ubuntu-0ubuntu2.92:4.7.6+dfsg~ubuntu-0ubuntu2.10 |
2:4.7.6+dfsg~ubuntu-0ubuntu2.11 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
USN-3976-3 is a vulnerability with no CVSS score yet in samba, published May 27, 2019. No source lists public exploit code. Fixed in samba 2:4.3.11+dfsg-0ubuntu0.16.04.21.