Description
m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.
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 | qemu | 1:3.1+dfsg-1 | — |
| Debian 13 | qemu | 1:3.1+dfsg-1 | — |
| Debian 12 | qemu | 1:3.1+dfsg-1 | — |
| Debian 9 | qemu | 1:2.8+dfsg-6+deb9u6 | DSA-4454-1 |
| Debian 8 | qemu | 1:2.1+dfsg-12+deb8u11 | DLA-1781-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | qemu | 1:2.11+dfsg-1ubuntu7.8 | USN-3826-1 |
| Ubuntu 16.04 LTS | qemu | 1:2.5+dfsg-5ubuntu10.33 | USN-3826-1 |
| Ubuntu 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.44 | USN-3826-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | qemu-img +3 | 10:1.5.3-156.el7_5.5 | RHSA-2018:2462 |
| RHEL 7 | qemu-img-ma +3 | 10:2.10.0-21.el7_5.4 | RHSA-2018:2762 |
| RHEL 7 | qemu-img-rhev +3 | 10:2.10.0-21.el7_5.7 | RHSA-2018:2887 |
| RHEL 6 | qemu-img +3 | 2:0.12.1.2-2.506.el6_10.5 | RHSA-2019:2892 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 13 | qemu-img-rhev +3 | 10:2.10.0-21.el7_5.6 | RHSA-2018:2822 |
| Red Hat OpenStack 12 | qemu-img-rhev +3 | 10:2.10.0-21.el7_5.6 | RHSA-2018:2822 |
| Red Hat OpenStack 10 | qemu-img-rhev +3 | 10:2.10.0-21.el7_5.6 | RHSA-2018:2822 |
| Red Hat OpenStack 9 | qemu-img-rhev +3 | 10:2.10.0-21.el7_5.6 | RHSA-2018:2822 |
| Red Hat OpenStack 8 | qemu-img-rhev +3 | 10:2.10.0-21.el7_5.6 | RHSA-2018:2822 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | qemu | 2.11.2-9.4.1 | SUSE-SU-2018:2340-1 |
| SLES 12 SP3 | qemu | 2.9.1-6.19.11 | SUSE-SU-2018:3555-1 |
| SLES 12 SP3 | xen | 4.9.2_08-3.35.2 | SUSE-SU-2018:2059-1 |
| SLES 12 SP2 | qemu | 2.6.2-41.43.3 | SUSE-SU-2018:2973-2, SUSE-SU-2018:2973-1 |
| SLES 12 SP2 | xen | 4.7.6_02-43.36.1 | SUSE-SU-2018:2081-2, SUSE-SU-2018:2081-1 |
| SLES 12 SP1 | qemu | 2.3.1-33.12.1 | SUSE-SU-2018:2565-1 |
| SLES 12 SP1 | xen | 4.5.5_24-22.52.3 | SUSE-SU-2018:2069-1 |
| SLES 12 | qemu | 2.0.2-48.43.3 | SUSE-SU-2018:2556-1 |
| SLES 12 | xen | 4.4.4_34-22.71.2 | SUSE-SU-2018:2056-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | kvm | 1.4.2-60.15.2 | SUSE-SU-2018:2650-1 |
| SLES 11 SP4 | xen | 4.4.4_34-61.32.1 | SUSE-SU-2018:2037-1 |
| SLES 11 SP3 | kvm | 1.4.2-53.23.2 | SUSE-SU-2018:2615-1 |
| SLES 11 SP3 | xen | 4.2.5_21-45.25.1 | SUSE-SU-2018:2528-1 |
| SLES for SAP 12 SP3 | qemu | 2.9.1-6.19.11 | SUSE-SU-2018:3555-1 |
| SLES for SAP 12 SP3 | xen | 4.9.2_08-3.35.2 | SUSE-SU-2018:2059-1 |
| SLES for SAP 12 SP2 | qemu | 2.6.2-41.43.3 | SUSE-SU-2018:2973-1 |
| SLES for SAP 12 SP2 | xen | 4.7.6_02-43.36.1 | SUSE-SU-2018:2081-1 |
| SLES for SAP 12 SP1 | qemu | 2.3.1-33.12.1 | SUSE-SU-2018:2565-1 |
| SLES for SAP 12 SP1 | xen | 4.5.5_24-22.52.3 | SUSE-SU-2018:2069-1 |
| SLES for SAP 11 SP4 | kvm | 1.4.2-60.15.2 | SUSE-SU-2018:2650-1 |
| SLES for SAP 11 SP4 | xen | 4.4.4_34-61.32.1 | SUSE-SU-2018:2037-1 |
| SUSE OpenStack Cloud 7 | qemu | 2.6.2-41.43.3 | SUSE-SU-2018:2973-1 |
| SUSE OpenStack Cloud 7 | xen | 4.7.6_02-43.36.1 | SUSE-SU-2018:2081-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kvm | 1.4.2-53.23.2 | SUSE-SU-2018:2615-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | xen | 4.2.5_21-45.25.1 | SUSE-SU-2018:2528-1 |
| SUSE Enterprise Storage 4 | qemu | 2.6.2-41.43.3 | SUSE-SU-2018:2973-1 |
| SUSE Enterprise Storage 4 | xen | 4.7.6_02-43.36.1 | SUSE-SU-2018:2081-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | qemu | 6.1.0-32.1 | openSUSE-SU-2024:11287-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | qemu-img +3 | 10:1.5.3-156.amzn2.5.4 | ALAS2-2018-1073 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ivshmem-tools +2 | 15:3.0.0-1.el7 | ELSA-2019-4585, ELSA-2018-4285 |
| Oracle Linux 7 | qemu +7 | 12:2.9.0-17.el7 | ELSA-2019-4585, ELSA-2018-4289, ELSA-2018-4285 |
| Oracle Linux 7 | qemu-img +3 | 10:1.5.3-156.el7_5.5 | ELSA-2019-4585, ELSA-2018-4289, ELSA-2018-4285 |
Advisories 31
- RHSA-2019:2892 Red Hat Security Advisory: qemu-kvm security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2018:2887 Red Hat Security Advisory: qemu-kvm-rhev security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:2822 Red Hat Security Advisory: qemu-kvm-rhev security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:2762 Red Hat Security Advisory: qemu-kvm-ma security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2018:2462 Red Hat Security Advisory: qemu-kvm security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3826-1 qemu vulnerabilities Ubuntu Security Notices (USN) · May 4, 2026
- DSA-4454-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1781-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:2973-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2973-2 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2556-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2340-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2081-2 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2650-1 Security update for kvm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3555-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2081-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2528-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2565-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2615-1 Security update for kvm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2056-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2059-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2037-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2069-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11287-1 qemu-6.1.0-32.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2024-2004 QEMU: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit den Rechten des Dienstes BSI CERT-Bund (WID) · Sep 2, 2024
- ELSA-2019-4585 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 15, 2019
- ELSA-2018-4289 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 28, 2018
- ELSA-2018-4285 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 20, 2018
- ELSA-2018-4262 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 29, 2018
- ALAS2-2018-1073 Important: qemu-kvm security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 15, 2018
- ELSA-2018-2462 Important: qemu-kvm security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 16, 2018
References
- RHSA-2018:2762 vendor-advisory
- 104400 vdb-entry
- USN-3826-1 vendor-advisory
- [qemu-devel] 20180605 [PATCH 1/2] slirp: correct size computation while concatenating mbuf mailing-list
- [oss-security] 20180607 CVE-2018-11806 Qemu: slirp: heap buffer overflow while reassembling fragmented datagrams mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1586245
- https://www.zerodayinitiative.com/advisories/ZDI-18-567/
- RHSA-2018:2462 vendor-advisory
- RHSA-2018:2822 vendor-advisory
- RHSA-2018:2887 vendor-advisory
- [debian-lts-announce] 20190509 [SECURITY] [DLA 1781-1] qemu security update mailing-list
- DSA-4454 vendor-advisory
- 20190531 [SECURITY] [DSA 4454-1] qemu security update mailing-list
- RHSA-2019:2892 vendor-advisory