CVE-2026-57965

MEDIUM

Spice-vdagent: integer overflow in udscs_write() leading to heap buffer overflow

Title source: cna
STIX 2.1

Description

A flaw was found in spice-vdagent. A malicious or compromised SPICE host can trigger an integer overflow by sending a specially crafted message. This vulnerability can lead to a heap buffer overflow, causing the spice-vdagent daemon to crash and resulting in a Denial of Service (DoS) for the virtual machine. This issue requires the SPICE host to be untrusted or compromised for exploitation.

References (2)

Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-57965
Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat
RHBZ#2493581
https://bugzilla.redhat.com/show_bug.cgi?id=2493581

Scores

CVSS v3 5.1
EPSS 0.0012
EPSS Percentile 2.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-190
Status published
Products (5)
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
Published Jun 29, 2026
Tracked Since Jun 29, 2026