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CVE-2026-102623— Kubevirt: kubevirt: virt-controller nil-pointer dereference via malformed ephemeral volume

一分钟漏洞结论

影响对象
Red Hat Red Hat OpenShift Virtualization 4
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

A flaw was found in KubeVirt. An authenticated user with permission to create Virtual Machine Instances (VMIs) can cause a Denial of Service (DoS) by submitting a virtual machine definition with an empty ephemeral volume. The virt-controller component fails to

CVSS 6.5 · Medium
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一、 漏洞 CVE-2026-102623 基础信息

漏洞信息

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Vulnerability Title
Kubevirt: kubevirt: virt-controller nil-pointer dereference via malformed ephemeral volume
来源: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in KubeVirt. An authenticated user with permission to create Virtual Machine Instances (VMIs) can cause a Denial of Service (DoS) by submitting a virtual machine definition with an empty ephemeral volume. The virt-controller component fails to properly validate the volume configuration, leading to an unhandled exception and application crash during processing. Because the malformed definition persists in the cluster, the controller enters a continuous crash loop, disrupting virtual machine lifecycle operations across the entire environment.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
Red Hat Red Hat OpenShift Virtualization 4 - cpe:/a:redhat:container_native_virtualization:4
Red Hat Red Hat OpenShift Virtualization 4 - cpe:/a:redhat:container_native_virtualization:4

二、漏洞 CVE-2026-102623 的公开POC

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三、漏洞 CVE-2026-102623 的情报信息

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CVE-2026-102623 其他参考 (2)

同批安全公告 · Red Hat · 2026-09-29 · 共 12 条

CVE-2026-102560 8.6 HIGH Libsoup: libsoup: heap buffer overflow during outgoing permessage-deflate buffer growth
CVE-2026-102559 8.6 HIGH Libsoup: libsoup: heap buffer overflow during websocket client-frame masking
CVE-2026-102558 8.6 HIGH Libsoup: libsoup: heap buffer overflow during websocket receive-buffer growth
CVE-2026-102557 8.6 HIGH Libsoup: libsoup: heap buffer overflow during websocket message reassembly
CVE-2026-102556 8.6 HIGH Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion
CVE-2026-102555 8.2 HIGH Libsoup: libsoup: heap buffer overflow via uninitialized length in data-uri base64 decodin
CVE-2026-95520 7.1 HIGH RPM iterreadarchivenext() 堆溢出漏洞
CVE-2026-97024 7.1 HIGH Flatpak: flatpak: arbitrary write in root context via path traversal in deploy directory f
CVE-2026-97029 5.7 MEDIUM Flatpak: flatpak: sandboxed app can signal unsandboxed processes in the same process group
CVE-2026-102473 5.5 MEDIUM Dash: dash: super-polynomial backtracking in pmatch when libc fnmatch is disabled
CVE-2026-102474 4.0 MEDIUM Dash: dash: heap out-of-bounds write in conv_escape via undersized unicode escape reservat

IV. Related Vulnerabilities

Same product: Red Hat OpenShift Virtualization 4
Same vendor: Red Hat
Same weakness: CWE-476

V. Comments for CVE-2026-102623

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