CVE-2026-107446

containerd overlaybd through 1.0.18 has a do_load_index (LSMT index loading) integer overflow ...

6.8 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.41%Unchanged since Oct 8, 2026

What each source reports

CVE List Score used 6.8

Record: CVE-2026-107446
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness: CWE-190
Updated: 2026-11-02

EUVDEUVD-2026-94691 6.8

Record: EUVD-2026-94691
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-x6rr-cr6c-gvp3 6.8

containerd overlaybd through 1.0.18 has a do_load_index (LSMT index loading) integer overflow ...

Record: GHSA-x6rr-cr6c-gvp3
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness: CWE-190
Updated: 2026-11-02

NVD 6.8

Record: CVE-2026-107446
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness: CWE-190
Updated: 2026-11-02

OSV 6.8

Record: CVE-2026-107446
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness: CWE-190
Updated: 2026-11-02

Affected products

containerd overlaybd

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-107446 is a medium vulnerability (CVSS 6.8) in Containerd Overlaybd, published October 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 35th percentile. No source names a fixed version.