CVE-2026-107446

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.

CVSS 3.1

6.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-25)

CWE

CWE-190

Published

2026-10-08

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

References

• https://github.com/containerd/overlaybd/blob/58f1508f4c841fe27da428f54d987000f7dae4de/src/image_file.cpp
• https://github.com/containerd/overlaybd/blob/58f1508f4c841fe27da428f54d987000f7dae4de/src/overlaybd/lsmt/file.cpp
• https://github.com/containerd/overlaybd/commit/a536e3341c82517268b5ce32375b36faecb1fb40
• https://github.com/containerd/overlaybd/commit/d80c1790920a17e84da025675530624aee753f1b
• https://github.com/containerd/overlaybd/pull/438

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