Description
smb4k before 2.0.1 allows local users to gain root privileges by leveraging failure to verify arguments to the mount helper DBUS service.
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 | smb4k | 1.2.1-2 | — |
| Debian 13 | smb4k | 1.2.1-2 | — |
| Debian 8 | smb4k | 1.2.1-2~deb8u1 | DSA-3951-1 |
| Debian 7 | smb4k | 1.2.1-2~deb7u1 | DLA-1002-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | smb4k | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | smb4k | 4.0.5-1.2 | openSUSE-SU-2026:10370-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- KDE 4/5 - 'KAuth' Local Privilege Escalation EDB-42053 · local · May 18, 2017
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- openSUSE-SU-2026:10370-1 smb4k-4.0.5-1.2 on GA media SUSE / openSUSE Security Updates · Mar 14, 2026
- DSA-3951-1 smb4k - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1002-1 smb4k - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://cgit.kde.org/smb4k.git/commit/?id=a90289b0962663bc1d247bbbd31b9e65b2ca000e
- 42053 exploit
- https://bugzilla.redhat.com/show_bug.cgi?id=1449656
- DSA-3951 vendor-advisory
- GLSA-201705-14 vendor-advisory
- https://www.kde.org/info/security/advisory-20170510-2.txt
- https://cgit.kde.org/smb4k.git/commit/?id=71554140bdaede27b95dbe4c9b5a028a83c83cce
- 98690 vdb-entry
- [oss-security] 20170510 generic kde LPE mailing-list
- 98737 vdb-entry