CVE-2026-57965
Spice-vdagent: integer overflow in udscs_write() leading to heap buffer overflow
- State
- Published
- Severity
- 5.1 Medium
- Published
- Jun 29, 2026
- Updated
- Jun 29, 2026
- Reserved
- Jun 26, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.1 Medium | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H | redhat |
Weaknesses
- CWE-190 Integer Overflow or Wraparound
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-57965vdb-entry
- RHBZ#2493581issue-tracking
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