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CVE-2018-17963qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of…
- 9.8CriticalCVSS base score
- 4.7%Exploitation in 30 daysEPSS · top 8.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
- 6 days later
· 6 days later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.7% · top 8.1% of all CVEs (12 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
n/a
- affected n/a
References
References9
- [oss-security] 20181008 Qemu: integer overflow issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-4338 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [qemu-devel] 20180926 [PULL 24/25] net: ignore packet size greater than INT_MAX (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-3826-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [debian-lts-announce] 20181130 [SECURITY] [DLA 1599-1] qemu security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg06054.html (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2019:2166 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:2425 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2019:2553 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-9703 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-17963)Record last updated .