Description
smbd in Samba 3.0 before 3.0.37, 3.2 before 3.2.15, 3.3 before 3.3.8, and 3.4 before 3.4.2 allows remote authenticated users to cause a denial of service (infinite loop) via an unanticipated oplock break notification reply 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 | 2:3.4.2-1 | — |
| Debian 13 | samba | 2:3.4.2-1 | — |
| Debian 12 | samba | 2:3.4.2-1 | — |
| Debian 5.0 | samba | 2:3.2.5-4lenny7 | DSA-1908-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | libsmbclient +1 | 3.0.34-46.el5 | RHSA-2009:1585 |
| RHEL 5 | libtalloc +1 | 1.2.0-46.el5 | RHSA-2009:1585 |
| RHEL 5 | libtdb +2 | 1.1.2-46.el5 | RHSA-2009:1585 |
| RHEL 5 | samba +3 | 3.0.33-3.15.el5_4 | RHSA-2009:1529 |
| RHEL 5 | samba3x +7 | 3.3.8-0.46.el5 | RHSA-2009:1585 |
| RHEL 4 | samba +3 | 3.0.33-0.18.el4_8 | RHSA-2009:1529 |
| RHEL 3 | samba +3 | 3.0.9-1.3E.16 | RHSA-2009:1528 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | cifs-utils | 6.5-1.5 | openSUSE-SU-2024:10334-1 |
| openSUSE Tumbleweed | samba | 4.5.0-1.1 | openSUSE-SU-2024:10069-1 |
Advisories 6
- RHSA-2009:1585 Red Hat Security Advisory: samba3x security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2009:1529 Red Hat Security Advisory: samba security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2009:1528 Red Hat Security Advisory: samba security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-1908-1 samba - several vulnerabilities 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
- openSUSE-SU-2024:10334-1 cifs-utils-6.5-1.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://samba.org/samba/security/CVE-2009-2906.html
- http://news.samba.org/releases/3.4.2/
- 20091112 rPSA-2009-0145-1 samba samba-client samba-server samba-swat mailing-list
- oval:org.mitre.oval:def:9944 vdb-entry signature
- FEDORA-2009-10172 vendor-advisory
- APPLE-SA-2010-03-29-1 vendor-advisory
- http://news.samba.org/releases/3.2.15/
- 1021111 vendor-advisory
- 58519 vdb-entry
- ADV-2009-2810 vdb-entry
- SSA:2009-276-01 vendor-advisory
- 37428 third-party-advisory
- 36937 third-party-advisory
- USN-839-1 vendor-advisory
- samba-smb-dos(53575) vdb-entry
- http://support.apple.com/kb/HT4077
- 36573 vdb-entry
- http://news.samba.org/releases/3.0.37/
- oval:org.mitre.oval:def:7090 vdb-entry signature
- 36918 third-party-advisory
- 1022976 vdb-entry
- 36893 third-party-advisory
- http://news.samba.org/releases/3.3.8/
- 36953 third-party-advisory
- http://wiki.rpath.com/Advisories:rPSA-2009-0145
- SUSE-SR:2009:017 vendor-advisory
- FEDORA-2009-10180 vendor-advisory