# SUSE-SU-2026:3630-1: kubevirt-1.6 security update

SUSE-SU-2026:3630-1, released August 17, 2026, fixes 16 CVEs in kubevirt-1.6 (version 1.6.6-150700.15.17.1). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/suse-su-2026-3630-1
- Platform: Linux
- Released: Aug 17, 2026
- Priority: Urgent (Closes CVE-2026-39821, rated Critical)
- CVEs: 16, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/SUSE-SU-2026:3630-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kubevirt-1.6](https://patchblox.com/security/data/product/linux/kubevirt-1.6.md) | sles 15.7 | 1.6.6-150700.15.17.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-39821](https://patchblox.com/security/data/cve/CVE-2026-39821.md) | Urgent | Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/net/idna | 10.0 | 0.0183 |  |
| [CVE-2026-33814](https://patchblox.com/security/data/cve/CVE-2026-33814.md) | High | Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net | 7.5 | 0.0084 |  |
| [CVE-2026-35469](https://patchblox.com/security/data/cve/CVE-2026-35469.md) | High | SpdyStream: DOS on CRI | 8.1 | 0.0066 |  |
| [CVE-2026-46600](https://patchblox.com/security/data/cve/CVE-2026-46600.md) | High | Parsing an invalid SVCB or HTTPS RR can panic in golang.org/x/net/dns/dnsmessage | 7.5 | 0.0055 |  |
| [CVE-2026-56852](https://patchblox.com/security/data/cve/CVE-2026-56852.md) | High | Infinite loop on invalid input in golang.org/x/text | 8.8 | 0.0048 |  |
| [CVE-2026-25681](https://patchblox.com/security/data/cve/CVE-2026-25681.md) | High | Invoking  incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html | 8.7 | 0.0022 |  |
| [CVE-2026-27136](https://patchblox.com/security/data/cve/CVE-2026-27136.md) | High | Invoking  duplicate attributes can cause XSS in golang.org/x/net/html | 8.7 | 0.0022 |  |
| [CVE-2026-42502](https://patchblox.com/security/data/cve/CVE-2026-42502.md) | High | Invoking  incorrect handling of HTML elements in foreign content in golang.org/x/net/html | 8.2 | 0.0022 |  |
| [CVE-2026-13622](https://patchblox.com/security/data/cve/CVE-2026-13622.md) | High | Kubevirt: virt-handler-rhel9: kubevirt: virt-handler migration proxy follows symlinks allowing container escape to host | 8.8 | 0.0020 |  |
| [CVE-2025-58181](https://patchblox.com/security/data/cve/CVE-2025-58181.md) | Routine | apptainer: Fixed unbounded memory consumption in | 5.3 | 0.0060 |  |
| [CVE-2025-47911](https://patchblox.com/security/data/cve/CVE-2025-47911.md) | Routine | alloy: golang.org/x/net/html: quadratic complexity algorithms used when parsing untrusted HTML documents | 5.3 | 0.0056 |  |
| [CVE-2025-47914](https://patchblox.com/security/data/cve/CVE-2025-47914.md) | Routine | apptainer: Fixed malformed constraint may cause denial of | 5.3 | 0.0055 |  |
| [CVE-2025-58190](https://patchblox.com/security/data/cve/CVE-2025-58190.md) | Routine | alloy: golang.org/x/net/html: excessive memory consumption by `html.ParseFragment` when processing specially | 5.3 | 0.0054 |  |
| [CVE-2026-25680](https://patchblox.com/security/data/cve/CVE-2026-25680.md) | Routine | Invoking denial of service when parsing arbitrary HTML in golang.org/x/net/html | 6.5 | 0.0033 |  |
| [CVE-2026-13201](https://patchblox.com/security/data/cve/CVE-2026-13201.md) | Routine | kubevirt: (bsc#1269093), safepath resolves a path whose last | n/a | 0.0031 |  |
| [CVE-2026-42506](https://patchblox.com/security/data/cve/CVE-2026-42506.md) | Routine | Invoking  incorrect handling of namespaced elements in foreign content in golang.org/x/net/html | 6.1 | 0.0024 |  |

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Data as of 2026-11-11T01:20:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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