Description
Samba before 4.7.3 might allow remote attackers to obtain sensitive information by leveraging failure of the server to clear allocated heap memory.
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 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | samba | 2:3.6.6-6+deb7u15 | DLA-1183-1 |
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 |
| SLES 11 SP4 | samba +1 | 3.6.3-94.8.1 | SUSE-SU-2018:0018-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP3 | samba +1 | 3.6.3-94.8.1 | SUSE-SU-2018:0018-1 |
| 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 |
| SLES for SAP 11 SP4 | samba +1 | 3.6.3-94.8.1 | SUSE-SU-2018:0018-1 |
| SUSE OpenStack Cloud 6 | samba | 4.2.4-28.24.1 | SUSE-SU-2017:3086-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | samba +1 | 3.6.3-94.8.1 | SUSE-SU-2018:0018-1 |
| 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 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | samba | 4.18.3-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ctdb +25 | 4.6.2-12.el7_4 | ELSA-2017-3260 |
Advisories 13
- 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
- DLA-1183-1 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
- SUSE-SU-2018:0018-1 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
- RHSA-2017:3278 vendor-advisory
- USN-3486-2 vendor-advisory
- DSA-4043 vendor-advisory
- [debian-lts-announce] 20171121 [SECURITY] [DLA 1183-1] samba security update mailing-list
- RHSA-2017:3260 vendor-advisory
- https://www.samba.org/samba/security/CVE-2017-15275.html
- 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
- 1039855 vdb-entry
- 101908 vdb-entry
- https://www.synology.com/support/security/Synology_SA_17_72_Samba