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CVE-2026-107446

Quick assessment

Affected
containerd overlaybd
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 containerd overlaybd 1.0.18 及更早版本中，当使用来自多个 overlaybd 容器的场景且引用了来自注册表的不可信 overlaybd blob 时，会存在一个整数溢出漏洞。该漏洞发生在 （LSMT 索引加载）函数中，涉及 参数，可能导致越界堆访问。

CVSS 6.8 · Medium
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I. Basic Information for CVE-2026-107446

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
containerd overlaybd through 1.0.18 has a do_load_index (LSMT index loading) integer overflow (and resultant out-of-bounds heap access) for index_bytes, if an untrusted overlaybd blob from a registry is used in a scenario with multiple overlaybd-backed containers.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
containerd overlaybd 0 ~ 1.0.18 -

II. Public POCs for CVE-2026-107446

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III. Intelligence Information for CVE-2026-107446

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Patches & Fixes for CVE-2026-107446 (3)

Other References for CVE-2026-107446 (1)

IV. Related Vulnerabilities

Same vendor: containerd
Same weakness: CWE-190

V. Comments for CVE-2026-107446

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