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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 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 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | spice-vdagent | 0.23.0-3 | — |
| Debian 13 | spice-vdagent | No fix yet | — |
| Debian 12 | spice-vdagent | 0.22.1-3+deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | spice-vdagent | 0.23.0-1ubuntu0.1 | USN-8723-1 |
| Ubuntu 25.10 | spice-vdagent | No fix yet | — |
| Ubuntu 24.04 LTS | spice-vdagent | 0.22.1-4ubuntu0.1 | USN-8723-1 |
| Ubuntu 22.04 LTS | spice-vdagent | 0.22.1-1ubuntu0.1 | USN-8723-1 |
| Ubuntu 20.04 LTS | spice-vdagent | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | spice-vdagent | No fix yet | — |
| Ubuntu 16.04 LTS | spice-vdagent | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | spice-vdagent | 0.22.1-150500.4.3.1 | SUSE-SU-2026:3485-1 |
| SLES 15 SP6 | spice-vdagent | 0.22.1-150500.4.3.1 | SUSE-SU-2026:3485-1 |
| SLES 15 SP5 | spice-vdagent | 0.22.1-150500.4.3.1 | SUSE-SU-2026:3485-1 |
| SLES 15 SP4 | spice-vdagent | 0.21.0-150300.3.6.1 | SUSE-SU-2026:3470-1 |
| SLES 12 SP5 | spice-vdagent | 0.16.0-8.13.2 | SUSE-SU-2026:3585-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | spice-vdagent | 0.22.1-160000.3.1 | SUSE-SU-2026:23109-1 |
| SLES for SAP 15 SP6 | spice-vdagent | 0.22.1-150500.4.3.1 | SUSE-SU-2026:3485-1 |
| SLES for SAP 15 SP5 | spice-vdagent | 0.22.1-150500.4.3.1 | SUSE-SU-2026:3485-1 |
| SLES for SAP 15 SP4 | spice-vdagent | 0.21.0-150300.3.6.1 | SUSE-SU-2026:3470-1 |
| SLES for SAP 12 SP5 | spice-vdagent | 0.16.0-8.13.2 | SUSE-SU-2026:3585-1 |
| SLES 16.0 | spice-vdagent | 0.22.1-160000.3.1 | SUSE-SU-2026:23109-1 |
| SLE HPC 15 SP5 | spice-vdagent | 0.22.1-150500.4.3.1 | SUSE-SU-2026:3485-1 |
| SLE HPC 15 SP4 | spice-vdagent | 0.21.0-150300.3.6.1 | SUSE-SU-2026:3470-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | spice-vdagent | 0.23.0-4.1 | openSUSE-SU-2026:11379-1 |
| openSUSE Leap 16.0 | spice-vdagent | 0.22.1-160000.3.1 | openSUSE-SU-2026:21506-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | spice-vdagent | 0.22.1-7.amzn2023.0.1 | ALAS2023-2026-2061 |
Advisories 8
- USN-8723-1 spice-vdagent vulnerabilities Ubuntu Security Notices (USN) · Sep 3, 2026
- ALAS2023-2026-2061 Moderate: spice-vdagent security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 17, 2026
- SUSE-SU-2026:23109-1 Security update for spice-vdagent SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:3585-1 Security update for spice-vdagent SUSE / openSUSE Security Updates · Aug 12, 2026
- SUSE-SU-2026:3485-1 Security update for spice-vdagent SUSE / openSUSE Security Updates · Aug 4, 2026
- SUSE-SU-2026:3470-1 Security update for spice-vdagent SUSE / openSUSE Security Updates · Aug 4, 2026
- openSUSE-SU-2026:21506-1 Security update for spice-vdagent SUSE / openSUSE Security Updates · Aug 2, 2026
- openSUSE-SU-2026:11379-1 spice-vdagent-0.23.0-4.1 on GA media SUSE / openSUSE Security Updates · Jul 27, 2026
References
- https://access.redhat.com/security/cve/CVE-2026-57965 vdb-entry
- RHBZ#2493581 issue-tracking