critical
CVE-2018-17963
QEMU: net: ignore packets with large size
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat6.5CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Oracle (high), Red Hat (medium), Ubuntu (medium).
Description
qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| debian 11 | qemu | 1:3.1+dfsg-1 |
| debian 12 | qemu | 1:3.1+dfsg-1 |
| debian 13 | qemu | 1:3.1+dfsg-1 |
| debian 14 | qemu | 1:3.1+dfsg-1 |
| debian 8 | qemu | 1:2.1+dfsg-12+deb8u8 |
| debian 9 | qemu | 1:2.8+dfsg-6+deb9u5 |
| echo | qemu | 1:3.1+dfsg-1 |
| Oracle Linux 7 | ivshmem-tools, qemu, qemu-block-gluster and 10 more | 15:3.1.0-1.el7 and 2 more |
| Red Hat | libcacard, libcacard-devel, libcacard-devel-rhev and 13 more | no fix listed |
| ubuntu 14.04 | qemu | 2.0.0+dfsg-2ubuntu1.44 |
| ubuntu 14.04-ESM | qemu | 2.0.0+dfsg-2ubuntu1.44 |
| ubuntu 16.04 | qemu | 1:2.5+dfsg-5ubuntu10.33 |
Show all 49 entries from 22 sources
| Source | Package | Fixed in |
|---|---|---|
| debian 11 | qemu | 1:3.1+dfsg-1 |
| debian 12 | qemu | 1:3.1+dfsg-1 |
| debian 13 | qemu | 1:3.1+dfsg-1 |
| debian 14 | qemu | 1:3.1+dfsg-1 |
| debian 8 | qemu | 1:2.1+dfsg-12+deb8u8 |
| debian 9 | qemu | 1:2.8+dfsg-6+deb9u5 |
| echo | qemu | 1:3.1+dfsg-1 |
| Oracle Linux 7 | ivshmem-tools | 15:3.1.0-1.el7 |
| Oracle Linux 7 | qemu | 15:3.0.0-1.el7 |
| Oracle Linux 7 | qemu-block-gluster | 15:3.0.0-1.el7 |
| Oracle Linux 7 | qemu-block-iscsi | 15:3.0.0-1.el7 |
| Oracle Linux 7 | qemu-block-rbd | 15:3.0.0-1.el7 |
| Oracle Linux 7 | qemu-common | 15:3.0.0-1.el7 |
| Oracle Linux 7 | qemu-img | 15:3.0.0-1.el7 |
| Oracle Linux 7 | qemu-kvm | 15:3.0.0-1.el7 |
| Oracle Linux 7 | qemu-kvm-core | 15:3.0.0-1.el7 |
| Oracle Linux 7 | qemu-system-aarch64 | 15:3.1.0-1.el7 |
| Oracle Linux 7 | qemu-system-aarch64-core | 15:3.1.0-1.el7 |
| Oracle Linux 7 | qemu-system-x86 | 12:2.9.0-17.el7 |
| Oracle Linux 7 | qemu-system-x86-core | 12:2.9.0-17.el7 |
| Red Hat | libcacard | no fix listed |
| Red Hat | libcacard-devel | no fix listed |
| Red Hat | libcacard-devel-rhev | no fix listed |
| Red Hat | libcacard-rhev | no fix listed |
| Red Hat | libcacard-tools | no fix listed |
| Red Hat | libcacard-tools-rhev | no fix listed |
| Red Hat | qemu-guest-agent | no fix listed |
| Red Hat | qemu-guest-agent-win32 | no fix listed |
| Red Hat | qemu-img | no fix listed |
| Red Hat | qemu-img-rhev | no fix listed |
| Red Hat | qemu-kvm | no fix listed |
| Red Hat | qemu-kvm-common | no fix listed |
| Red Hat | qemu-kvm-common-rhev | no fix listed |
| Red Hat | qemu-kvm-rhev | no fix listed |
| Red Hat | qemu-kvm-tools | no fix listed |
| Red Hat | qemu-kvm-tools-rhev | no fix listed |
| ubuntu 14.04 | qemu | 2.0.0+dfsg-2ubuntu1.44 |
| ubuntu 14.04-ESM | qemu | 2.0.0+dfsg-2ubuntu1.44 |
| ubuntu 16.04 | qemu | 1:2.5+dfsg-5ubuntu10.33 |
| ubuntu 16.04-ESM | qemu | 1:2.5+dfsg-5ubuntu10.33 |
| ubuntu 18.04 | qemu | 1:2.11+dfsg-1ubuntu7.8 |
| ubuntu 18.04-ESM | qemu | 1:2.11+dfsg-1ubuntu7.8 |
| ubuntu 18.10 | qemu | 1:2.12+dfsg-3ubuntu8.1 |
| ubuntu 19.04 | qemu | 1:2.12+dfsg-3ubuntu9 |
| ubuntu 19.10 | qemu | 1:2.12+dfsg-3ubuntu9 |
| ubuntu 20.04 | qemu | 1:2.12+dfsg-3ubuntu9 |
| ubuntu 20.04-ESM | qemu | 1:2.12+dfsg-3ubuntu9 |
| ubuntu 20.10 | qemu | 1:2.12+dfsg-3ubuntu9 |
| ubuntu 21.04 | qemu | 1:2.12+dfsg-3ubuntu9 |
References
- http://www.openwall.com/lists/oss-security/2018/10/08/1
- https://access.redhat.com/errata/RHSA-2019:2166
- https://access.redhat.com/errata/RHSA-2019:2425
- https://access.redhat.com/errata/RHSA-2019:2553
- https://access.redhat.com/security/cve/CVE-2018-17963
- https://linux.oracle.com/cve/CVE-2018-17963.html
- https://linux.oracle.com/errata/ELSA-2019-4585.html
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
All 15 references
- https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03267.html
- https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg06054.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-17963
- https://ubuntu.com/security/notices/USN-3826-1
- https://usn.ubuntu.com/3826-1/
- https://www.cve.org/CVERecord?id=CVE-2018-17963
- https://www.debian.org/security/2018/dsa-4338