Description
It was found that cifs-utils' mount.cifs was invoking a shell when requesting the Samba password, which could be used to inject arbitrary commands. An attacker able to invoke mount.cifs with special permission, such as via sudo rules, could use this flaw to escalate their privileges.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| samba | cifs-utils | 6.11 | — |
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 | cifs-utils | 2:6.11-1 | — |
| Debian 13 | cifs-utils | 2:6.11-1 | — |
| Debian 12 | cifs-utils | 2:6.11-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | cifs-utils | 2:6.14-1ubuntu0.1 | USN-5459-1 |
| Ubuntu 20.04 LTS | cifs-utils | 2:6.9-1ubuntu0.2 | USN-5459-1 |
| Ubuntu 18.04 LTS | cifs-utils | 2:6.8-1ubuntu1.2 | USN-5459-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | cifs-utils | 2:6.4-1ubuntu1.1+esm1 | USN-7688-1 |
| Ubuntu Pro 14.04 LTS | cifs-utils | 2:6.0-1ubuntu2+esm1 | USN-7688-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | cifs-utils | 6.9-5.6.1 | SUSE-SU-2020:2729-1 |
| SLES 15 SP1 | cifs-utils | 6.9-5.6.1 | SUSE-SU-2020:2729-1 |
| SLES 15 | cifs-utils | 6.9-3.14.1 | SUSE-SU-2021:1455-1 |
| SLES 12 SP5 | cifs-utils | 6.9-13.11.1 | SUSE-SU-2020:2728-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 | cifs-utils | 6.9-3.14.1 | SUSE-SU-2021:1455-1 |
| SLES for SAP 12 SP5 | cifs-utils | 6.9-13.11.1 | SUSE-SU-2020:2728-1 |
| SLE HPC 15 | cifs-utils | 6.9-3.14.1 | SUSE-SU-2021:1455-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | cifs-utils | 6.13-1.3 | openSUSE-SU-2024:10683-1 |
| openSUSE Leap 15.2 | cifs-utils | 6.9-lp152.2.3.1 | openSUSE-SU-2021:0639-1 |
| openSUSE Leap 15.1 | cifs-utils | 6.9-lp151.4.7.1 | openSUSE-SU-2020:1579-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.13 | cifs-utils | 6.11-r0 | — |
| Alpine v3.11 | cifs-utils | 6.13-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | cifs-utils | 6.8-6 | — |
Advisories 8
- USN-7688-1 cifs-utils vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-5459-1 cifs-utils vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2020:2729-1 Security update for cifs-utils SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1455-1 Security update for cifs-utils SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1579-1 Security update for cifs-utils SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0639-1 Security update for cifs-utils SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:2728-1 Security update for cifs-utils SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10683-1 cifs-utils-6.13-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://lists.samba.org/archive/samba-technical/2020-September/135747.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14342
- GLSA-202009-16 vendor-advisory
- openSUSE-SU-2020:1579 vendor-advisory
- FEDORA-2020-ea0b9caac3 vendor-advisory
- FEDORA-2020-cfdd73f1b4 vendor-advisory