Description
The parse_dos_extended function in partitions/dos.c in the libblkid library in util-linux allows physically proximate attackers to cause a denial of service (memory consumption) via a crafted MSDOS partition table with an extended partition boot record at zero offset.
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 | util-linux | 2.28.1-1 | — |
| Debian 13 | util-linux | 2.28.1-1 | — |
| Debian 12 | util-linux | 2.28.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | util-linux | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | util-linux | 2.27.1-6ubuntu3.10+esm2 | USN-5478-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | uuidd +7 | 2.23.2-33.el7 | RHSA-2016:2605 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | python-libmount | 2.28-42.4 | SUSE-SU-2016:2954-1 |
| SLES 12 SP2 | util-linux | 2.28-42.1 | SUSE-SU-2016:2954-1 |
| SLES 12 SP2 | util-linux-systemd | 2.28-42.3 | SUSE-SU-2016:2954-1 |
| SLES 12 SP1 | util-linux +2 | 2.25-37.1 | SUSE-SU-2016:2764-1 |
| SLES 12 | python-libmount | 2.25-24.10.3 | SUSE-SU-2017:0553-1 |
| SLES 12 | util-linux +1 | 2.25-24.10.1 | SUSE-SU-2017:0553-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | python-libmount | 2.28-42.4 | SUSE-SU-2016:2954-1 |
| SLES for SAP 12 SP2 | util-linux | 2.28-42.1 | SUSE-SU-2016:2954-1 |
| SLES for SAP 12 SP2 | util-linux-systemd | 2.28-42.3 | SUSE-SU-2016:2954-1 |
| SLES for SAP 12 SP1 | util-linux +2 | 2.25-37.1 | SUSE-SU-2016:2764-1 |
| SLES for SAP 12 | python-libmount | 2.25-24.10.3 | SUSE-SU-2017:0553-1 |
| SLES for SAP 12 | util-linux +1 | 2.25-24.10.1 | SUSE-SU-2017:0553-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | util-linux | 2.36.2-3.2 | openSUSE-SU-2024:11282-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | uuidd +7 | 2.23.2-33.0.1.el7 | ELSA-2016-2605 |
Advisories 7
- RHSA-2016:2605 Red Hat Security Advisory: util-linux security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5478-1 util-linux vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- SUSE-SU-2016:2764-1 Security update for util-linux SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11282-1 libblkid-devel-2.36.2-3.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0553-1 Security update for util-linux SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2954-1 Security update for util-linux SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2016-2605 Low: util-linux security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 9, 2016
References
- https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=7164a1c3
- 91683 vdb-entry
- 1036272 vdb-entry
- [oss-security] 20160711 CVE-2016-5011: util-linux: Extended partition loop in MBR partition table leads to DoS mailing-list
- http://www-01.ibm.com/support/docview.wss?uid=nas8N1021801
- http://www-01.ibm.com/support/docview.wss?uid=isg3T1024543
- RHSA-2016:2605 vendor-advisory