Description
The sys_recvfrom function in nmbd in Samba 3.6.x before 3.6.24, 4.0.x before 4.0.19, and 4.1.x before 4.1.9 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed UDP packet.
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 | 2:4.1.9+dfsg-1 | — |
| Debian 13 | samba | 2:4.1.9+dfsg-1 | — |
| Debian 12 | samba | 2:4.1.9+dfsg-1 | — |
| Debian 7 | samba | 2:3.6.6-6+deb7u4 | DSA-2966-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | samba | 2:4.1.6+dfsg-1ubuntu2.14.04.2 | USN-2257-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | samba +19 | 4.1.1-35.el7_0 | RHSA-2014:0867 |
| RHEL 6 | samba +11 | 3.6.9-169.el6_5 | RHSA-2014:0866 |
| RHEL 6 | samba4 +13 | 4.0.0-63.el6_5.rc4 | RHSA-2014:1009 |
| RHEL 5 | samba3x +7 | 3.6.6-0.140.el5_10 | RHSA-2014:0866 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | samba | 4.5.0-1.1 | openSUSE-SU-2024:10069-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | samba +19 | 4.1.1-35.el7_0 | ELSA-2014-0867 |
Advisories 7
- RHSA-2014:1009 Red Hat Security Advisory: samba4 security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0866 Red Hat Security Advisory: samba and samba3x security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2014:0867 Red Hat Security Advisory: samba security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-2257-1 samba vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-2966-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10069-1 ctdb-4.5.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2014-0867 Moderate: samba security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 23, 2014
References
- https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_samba1
- MDVSA-2014:136 vendor-advisory
- RHSA-2014:0866 vendor-advisory
- http://www.samba.org/samba/security/CVE-2014-0244
- FEDORA-2014-9132 vendor-advisory
- 68148 vdb-entry
- 61218 third-party-advisory
- 59834 third-party-advisory
- http://linux.oracle.com/errata/ELSA-2014-0866.html
- 59848 third-party-advisory
- 20140711 [ MDVSA-2014:136 ] samba mailing-list
- GLSA-201502-15 vendor-advisory
- 59407 third-party-advisory
- FEDORA-2014-7672 vendor-advisory
- 59433 third-party-advisory
- 59919 third-party-advisory
- http://advisories.mageia.org/MGASA-2014-0279.html
- 59378 third-party-advisory
- MDVSA-2015:082 vendor-advisory
- 59579 third-party-advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993
- https://bugzilla.redhat.com/show_bug.cgi?id=1097815
- 1030455 vdb-entry