Description
Use-after-free vulnerability in Samba 4.x before 4.7.3 allows remote attackers to execute arbitrary code via a crafted SMB1 request.
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 | 2:4.7.1+dfsg-2 | — |
| Debian 13 | samba | 2:4.7.1+dfsg-2 | — |
| Debian 12 | samba | 2:4.7.1+dfsg-2 | — |
| Debian 9 | samba | 2:4.5.12+dfsg-2+deb9u1 | DSA-4043-1 |
| Debian 8 | samba | 2:4.2.14+dfsg-0+deb8u9 | DSA-4043-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | samba | 2:4.3.11+dfsg-0ubuntu0.16.04.12 | USN-3486-1 |
| Ubuntu 14.04 LTS | samba | 2:4.3.11+dfsg-0ubuntu0.14.04.13 | USN-3486-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | ctdb +25 | 4.6.2-12.el7_4 | RHSA-2017:3260 |
| RHEL 6 | samba4 +12 | 4.2.10-12.el6_9 | RHSA-2017:3278 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Gluster Storage 3 | ctdb +25 | 4.6.3-9.el6rhs | RHSA-2017:3261 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | samba | 4.6.9+git.59.c2cff9cea4c-3.17.1 | SUSE-SU-2017:3155-1 |
| SLES 12 SP2 | samba | 4.2.4-28.24.1 | SUSE-SU-2017:3104-1, SUSE-SU-2017:3086-1 |
| SLES 12 SP1 | samba | 4.2.4-28.24.1 | SUSE-SU-2017:3086-1 |
| SLES 12 | samba | 4.2.4-18.49.1 | SUSE-SU-2018:2321-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | samba | 4.6.9+git.59.c2cff9cea4c-3.17.1 | SUSE-SU-2017:3155-1 |
| SLES for SAP 12 SP2 | samba | 4.2.4-28.24.1 | SUSE-SU-2017:3104-1, SUSE-SU-2017:3086-1 |
| SLES for SAP 12 SP1 | samba | 4.2.4-28.24.1 | SUSE-SU-2017:3086-1 |
| SUSE OpenStack Cloud 6 | samba | 4.2.4-28.24.1 | SUSE-SU-2017:3086-1 |
| SUSE Enterprise Storage 5 | samba | 4.6.9+git.59.c2cff9cea4c-3.17.1 | SUSE-SU-2017:3155-1 |
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 | 4.7.3-r0 | — |
| Alpine v3.23 | samba | 4.7.3-r0 | — |
| Alpine v3.22 | samba | 4.7.3-r0 | — |
| Alpine v3.21 | samba | 4.7.3-r0 | — |
| Alpine v3.20 | samba | 4.7.3-r0 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | samba | 4.7.3-r0 | — |
| Alpine v3.18 | samba | 4.7.3-r0 | — |
| Alpine v3.17 | samba | 4.7.3-r0 | — |
| Alpine v3.16 | samba | 4.7.3-r0 | — |
| Alpine v3.15 | samba | 4.7.3-r0 | — |
| Alpine v3.14 | samba | 4.7.3-r0 | — |
| Alpine v3.13 | samba | 4.7.3-r0 | — |
| Alpine v3.12 | samba | 4.7.3-r0 | — |
| Alpine v3.11 | samba | 4.7.3-r0 | — |
| Alpine v3.10 | samba | 4.7.3-r0 | — |
| Alpine v3.9 | samba | 4.7.3-r0 | — |
| Alpine v3.8 | samba | 4.7.3-r0 | — |
| Alpine v3.7 | samba | 4.7.3-r0 | — |
| Alpine v3.4 | samba | 4.4.16-r1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ctdb +25 | 4.6.2-12.el7_4 | ELSA-2017-3260 |
Advisories 11
- RHSA-2017:3260 Red Hat Security Advisory: samba security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2017:3278 Red Hat Security Advisory: samba4 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2017:3261 Red Hat Security Advisory: samba security update Red Hat Security Advisories (RHSA) · May 13, 2026
- USN-3486-1 samba vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4043-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:3086-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3155-1 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-2017:3104-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2321-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2017-3260 Important: samba security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 27, 2017
References
- https://www.samba.org/samba/security/CVE-2017-14746.html
- RHSA-2017:3278 vendor-advisory
- DSA-4043 vendor-advisory
- RHSA-2017:3260 vendor-advisory
- 1039856 vdb-entry
- 101907 vdb-entry
- RHSA-2017:3261 vendor-advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03817en_us
- GLSA-201805-07 vendor-advisory
- USN-3486-1 vendor-advisory
- https://www.synology.com/support/security/Synology_SA_17_72_Samba