Description
The SMB1 implementation in smbd in Samba 3.x and 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4 allows remote authenticated users to modify arbitrary ACLs by using a UNIX SMB1 call to create a symlink, and then using a non-UNIX SMB1 call to write to the ACL content.
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 | 2:4.3.6+dfsg-1 | — |
| Debian 13 | samba | 2:4.3.6+dfsg-1 | — |
| Debian 12 | samba | 2:4.3.6+dfsg-1 | — |
| Debian 8 | samba | 2:4.1.17+dfsg-2+deb8u2 | DSA-3514-1 |
| Debian 7 | samba | 2:3.6.6-6+deb7u7 | DSA-3514-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | samba | 2:4.3.6+dfsg-1ubuntu1 | — |
| Ubuntu 14.04 LTS | samba | 2:4.1.6+dfsg-1ubuntu2.14.04.13 | USN-2922-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | ctdb +26 | 4.2.3-12.el7_2 | RHSA-2016:0448 |
| RHEL 6 | samba +12 | 3.6.23-25.el6_7 | RHSA-2016:0448 |
| RHEL 6 | samba4 +13 | 4.0.0-68.el6_7.rc4 | RHSA-2016:0449 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Gluster Storage 3 | ctdb +26 | 4.2.4-15.el6rhs | RHSA-2016:0447 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | samba | 4.2.4-11.1 | SUSE-SU-2016:0816-1 |
| SLES 12 | samba | 4.1.12-18.8.1 | SUSE-SU-2016:0814-1 |
| SLES 11 SP4 | samba +1 | 3.6.3-67.2 | SUSE-SU-2016:0837-1 |
| SLES 11 SP2 | samba +1 | 3.6.3-48.2 | SUSE-SU-2016:0905-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | samba | 4.2.4-11.1 | SUSE-SU-2016:0816-1 |
| SLES for SAP 12 | samba | 4.1.12-18.8.1 | SUSE-SU-2016:0814-1 |
| SLES for SAP 11 SP4 | samba +1 | 3.6.3-67.2 | SUSE-SU-2016:0837-1 |
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 +23 | 4.2.3-12.el7_2 | ELSA-2016-0448 |
| Oracle Linux 7 | samba-doc +4 | 3.6.23-25.0.1.el6_7 | ELSA-2016-0448 |
Advisories 11
- RHSA-2016:0448 Red Hat Security Advisory: samba security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2016:0449 Red Hat Security Advisory: samba4 security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2016:0447 Red Hat Security Advisory: samba security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-2922-1 samba vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3514-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:0814-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0816-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0837-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10069-1 ctdb-4.5.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0905-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2016-0448 Moderate: samba security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 15, 2016
References
- 84267 vdb-entry
- openSUSE-SU-2016:1064 vendor-advisory
- SUSE-SU-2016:0837 vendor-advisory
- openSUSE-SU-2016:0813 vendor-advisory
- openSUSE-SU-2016:0877 vendor-advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05121842
- 1035220 vdb-entry
- FEDORA-2016-cad77a4576 vendor-advisory
- SUSE-SU-2016:0814 vendor-advisory
- https://www.samba.org/samba/security/CVE-2015-7560.html
- https://bugzilla.samba.org/show_bug.cgi?id=11648
- openSUSE-SU-2016:1106 vendor-advisory
- FEDORA-2016-4b55f00d00 vendor-advisory
- FEDORA-2016-ed1587f6ba vendor-advisory
- openSUSE-SU-2016:1107 vendor-advisory
- SUSE-SU-2016:0905 vendor-advisory
- SUSE-SU-2016:0816 vendor-advisory
- USN-2922-1 vendor-advisory
- DSA-3514 vendor-advisory