CVE-2018-10839

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-10-16 · updated 2026-06-17
Weakness: CWE-121

Description

Qemu emulator <= 3.0.0 built with the NE2000 NIC emulation support is vulnerable to an integer overflow, which could lead to buffer overflow issue. It could occur when receiving packets over the network. A user inside guest could use this flaw to crash the Qemu process resulting in DoS.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 18.10
Debian Linux: 8.0, 9.0
QEMU: through 3.0.0

References

https://access.redhat.com/errata/RHSA-2019:2892
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10839
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03273.html
https://usn.ubuntu.com/3826-1/
https://www.debian.org/security/2018/dsa-4338
https://www.openwall.com/lists/oss-security/2018/10/08/1
https://access.redhat.com/errata/RHSA-2019:2892
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10839
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03273.html
https://usn.ubuntu.com/3826-1/

Get alerted when CVE-2018-10839 or the next vulnerability affects your stack