CVE-2018-17963
9.8
CRITICAL · CVSS 3.1 · EPSS 4.7% (pctl 91)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.65% — more likely to be exploited than 91% of all CVEs |
| Weakness | CWE-190 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-10-09 |
| Last modified | 2026-06-17 |
Affected (6)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| debian | debian linux |
| qemu | qemu |
| redhat | openstack |
| redhat | virtualization |
| redhat | virtualization manager |
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://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- 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://usn.ubuntu.com/3826-1/
- https://www.debian.org/security/2018/dsa-4338
- 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://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- 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://usn.ubuntu.com/3826-1/
- https://www.debian.org/security/2018/dsa-4338
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