Description
All versions of Samba from 4.0.0 onwards are vulnerable to a denial of service attack when the RPC spoolss service is configured to be run as an external daemon. Missing input sanitization checks on some of the input parameters to spoolss RPC calls could cause the print spooler service to crash.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Samba | Samba | All versions of Samba from 4.0.0 onwards | — |
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 | 2:4.7.4+dfsg-2 | — |
| Debian 13 | samba | 2:4.7.4+dfsg-2 | — |
| Debian 12 | samba | 2:4.7.4+dfsg-2 | — |
| Debian 9 | samba | 2:4.5.12+dfsg-2+deb9u2 | DSA-4135-1 |
| Debian 8 | samba | 2:4.2.14+dfsg-0+deb8u12 | DLA-1754-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | samba | 2:3.6.6-6+deb7u16 | DLA-1320-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | samba | 2:4.3.11+dfsg-0ubuntu0.16.04.13 | USN-3595-1 |
| Ubuntu 14.04 LTS | samba | 2:4.3.11+dfsg-0ubuntu0.14.04.14 | USN-3595-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | ctdb +26 | 4.8.3-4.el7 | RHSA-2018:3056 |
| RHEL 6 | samba +12 | 3.6.23-51.el6 | RHSA-2018:1860 |
| RHEL 6 | samba4 +12 | 4.2.10-15.el6 | RHSA-2018:1883 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Gluster Storage 3 | ctdb +22 | 4.7.5-110.el6rhs | RHSA-2018:2613, RHSA-2018:2612 |
| Red Hat Gluster Storage 3 | libtdb +3 | 1.3.15-4.el6rhs | RHSA-2018:2613, RHSA-2018:2612 |
| Red Hat Gluster Storage 3 | libtevent +2 | 0.9.35-1.el6rhs | RHSA-2018:2613, RHSA-2018:2612 |
| Red Hat Gluster Storage 3 | pytalloc +3 | 2.1.11-1.el6rhs | RHSA-2018:2613, RHSA-2018:2612 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | samba | 4.6.13+git.72.2a684235f41-3.21.3 | SUSE-SU-2018:0754-1 |
| SLES 12 SP3 | talloc | 2.1.10-3.3.2 | SUSE-SU-2018:0754-1 |
| SLES 12 SP3 | tevent | 0.9.34-3.3.2 | SUSE-SU-2018:0754-1 |
| SLES 12 SP2 | samba | 4.2.4-28.29.1 | SUSE-SU-2018:2339-2, SUSE-SU-2018:2339-1, SUSE-SU-2018:0832-1 |
| SLES 12 SP1 | samba | 4.2.4-28.29.1 | SUSE-SU-2018:2339-1 |
| SLES 12 | samba | 4.2.4-18.49.1 | SUSE-SU-2018:2321-1 |
| SLES 11 SP4 | samba +1 | 3.6.3-94.11.1 | SUSE-SU-2018:0774-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | samba | 4.6.13+git.72.2a684235f41-3.21.3 | SUSE-SU-2018:0754-1 |
| SLES for SAP 12 SP3 | talloc | 2.1.10-3.3.2 | SUSE-SU-2018:0754-1 |
| SLES for SAP 12 SP3 | tevent | 0.9.34-3.3.2 | SUSE-SU-2018:0754-1 |
| SLES for SAP 12 SP2 | samba | 4.2.4-28.29.1 | SUSE-SU-2018:2339-1, SUSE-SU-2018:0832-1 |
| SLES for SAP 12 SP1 | samba | 4.2.4-28.29.1 | SUSE-SU-2018:2339-1 |
| SLES for SAP 11 SP4 | samba +1 | 3.6.3-94.11.1 | SUSE-SU-2018:0774-1 |
| SUSE OpenStack Cloud 7 | samba | 4.2.4-28.29.1 | SUSE-SU-2018:2339-1 |
| SUSE Enterprise Storage 5 | samba | 4.6.13+git.72.2a684235f41-3.21.3 | SUSE-SU-2018:0754-1 |
| SUSE Enterprise Storage 4 | samba | 4.2.4-28.29.1 | SUSE-SU-2018:2339-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | samba | 4.14.6+git.182.2205d5224e3-1.1 | openSUSE-SU-2024:11365-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | samba | 4.7.6-r0 | — |
| Alpine v3.23 | samba | 4.7.6-r0 | — |
| Alpine v3.22 | samba | 4.7.6-r0 | — |
| Alpine v3.21 | samba | 4.7.6-r0 | — |
| Alpine v3.20 | samba | 4.7.6-r0 | — |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | samba | 4.7.6-r0 | — |
| Alpine v3.18 | samba | 4.7.6-r0 | — |
| Alpine v3.17 | samba | 4.7.6-r0 | — |
| Alpine v3.16 | samba | 4.7.6-r0 | — |
| Alpine v3.15 | samba | 4.7.6-r0 | — |
| Alpine v3.14 | samba | 4.7.6-r0 | — |
| Alpine v3.13 | samba | 4.7.6-r0 | — |
| Alpine v3.12 | samba | 4.7.6-r0 | — |
| Alpine v3.11 | samba | 4.7.6-r0 | — |
| Alpine v3.10 | samba | 4.7.6-r0 | — |
| Alpine v3.9 | samba | 4.7.6-r0 | — |
| Alpine v3.8 | samba | 4.7.6-r0 | — |
| Alpine v3.7 | samba | 4.7.6-r0 | — |
| Alpine v3.6 | samba | 4.6.14-r0 | — |
| Alpine v3.5 | samba | 4.5.16-r0 | — |
| Alpine v3.4 | samba | 4.4.16-r2 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | ctdb +26 | 4.8.3-4.amzn2.0.1 | ALAS2-2018-1126 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | samba | 4.12.5-6 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ctdb +26 | 4.8.3-4.el7 | ELSA-2018-3056 |
Advisories 18
- RHSA-2018:3056 Red Hat Security Advisory: samba security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2018:2613 Red Hat Security Advisory: samba security, bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2018:2612 Red Hat Security Advisory: samba security, bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2018:1883 Red Hat Security Advisory: samba4 security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:1860 Red Hat Security Advisory: samba security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3595-1 samba vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1754-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4135-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1320-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:2339-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11365-1 ctdb-4.14.6+git.182.2205d5224e3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2321-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0832-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0754-1 Security update for samba, talloc, tevent SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2339-2 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0774-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2018-1126 Moderate: samba security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Dec 19, 2018
- ELSA-2018-3056 Moderate: samba security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 5, 2018
References
- USN-3595-2 vendor-advisory
- 103387 vdb-entry
- RHSA-2018:2613 vendor-advisory
- RHSA-2018:2612 vendor-advisory
- RHSA-2018:1883 vendor-advisory
- DSA-4135 vendor-advisory
- USN-3595-1 vendor-advisory
- RHSA-2018:1860 vendor-advisory
- RHSA-2018:3056 vendor-advisory
- GLSA-201805-07 vendor-advisory
- 1040493 vdb-entry
- [debian-lts-announce] 20180327 [SECURITY] [DLA 1320-1] samba security update mailing-list
- [debian-lts-announce] 20190409 [SECURITY] [DLA 1754-1] samba security update mailing-list
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://www.samba.org/samba/security/CVE-2018-1050.html
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbns03834en_us
- https://bugzilla.redhat.com/show_bug.cgi?id=1538771
- https://security.netapp.com/advisory/ntap-20180313-0001/