Description
libqb before 1.0.5 allows local users to overwrite arbitrary files via a symlink attack, because it uses predictable filenames (under /dev/shm and /tmp) without O_EXCL.
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 | libqb | 1.0.4-1 | — |
| Debian 13 | libqb | 1.0.4-1 | — |
| Debian 12 | libqb | 1.0.4-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libqb | No fix yet | — |
| Ubuntu 16.04 LTS | libqb | No fix yet | — |
| Ubuntu 14.04 LTS | libqb | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | libqb +1 | 1.0.3-10.el8 | RHSA-2019:3610 |
| RHEL 7 | libqb +1 | 1.0.1-9.el7 | RHSA-2020:1189 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | libqb | 1.0.3+20190326.a521604-3.3.1 | SUSE-SU-2019:1791-1 |
| SLES 15 | libqb | 1.0.3+20171226.6d62b64-3.3.1 | SUSE-SU-2019:1812-1 |
| SLES 12 SP4 | libdlm | 4.0.7-3.3.2 | SUSE-SU-2019:1806-1 |
| SLES 12 SP4 | libqb | 1.0.3+20171226.6d62b64-4.3.1 | SUSE-SU-2019:1806-1 |
| SLES 12 SP3 | libdlm | 4.0.7-3.3.2 | SUSE-SU-2019:1806-1 |
| SLES 12 SP3 | libqb | 1.0.3+20171226.6d62b64-4.3.1 | SUSE-SU-2019:1806-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP1 | libqb | 1.0.3+20190326.a521604-bp151.2.3.1 | openSUSE-SU-2019:1891-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | libqb | 1.0.3+20190326.a521604-lp151.2.3.1 | openSUSE-SU-2019:1752-1 |
| openSUSE Leap 15.0 | libqb | 1.0.3+20171226.6d62b64-lp150.2.3.1 | openSUSE-SU-2019:1718-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | libqb +1 | 1.0.5-1.amzn2 | ALAS2-2019-1210 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | libqb +1 | 1.0.3-10.el8 | ELSA-2019-3610 |
| Oracle Linux 7 | libqb +1 | 1.0.1-9.el7 | ELSA-2020-1189 |
Advisories 11
- RHSA-2020:1189 Red Hat Security Advisory: libqb security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- SUSE-SU-2019:1806-1 Security update for libdlm, libqb SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1791-1 Security update for libqb SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1752-1 Security update for libqb SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1891-1 Security update for libqb SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1812-1 Security update for libqb SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1718-1 Security update for libqb SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2019:3610 Red Hat Security Advisory: libqb security and bug fix update Red Hat Security Advisories (RHSA) · Jan 14, 2026
- ALAS2-2019-1210 Moderate: libqb security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 29, 2021
- ELSA-2020-1189 Moderate: libqb security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 6, 2020
- ELSA-2019-3610 Moderate: libqb security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 14, 2019
References
- https://github.com/ClusterLabs/libqb/issues/338
- https://bugzilla.redhat.com/show_bug.cgi?id=1695948
- https://github.com/ClusterLabs/libqb/releases/tag/v1.0.5
- https://github.com/ClusterLabs/libqb/releases/tag/v1.0.4
- 108691 vdb-entry
- openSUSE-SU-2019:1718 vendor-advisory
- openSUSE-SU-2019:1752 vendor-advisory
- openSUSE-SU-2019:1891 vendor-advisory
- RHSA-2019:3610 vendor-advisory
- GLSA-202107-03 vendor-advisory