Medium severity · published Oct 8, 2026
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…
6.8
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OV
overlaybd · containerd
through 1.0.18 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107446
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107446
github.com
https://github.com/containerd/overlaybd/blob/58f1508f4c841fe27da428f54d987000f7dae4de/src/overlaybd/lsmt/file.cpp
github.com
https://github.com/containerd/overlaybd/blob/58f1508f4c841fe27da428f54d987000f7dae4de/src/image_file.cpp
github.com
https://github.com/containerd/overlaybd/pull/438
github.com
https://github.com/containerd/overlaybd/commit/a536e3341c82517268b5ce32375b36faecb1fb40
github.com
https://github.com/containerd/overlaybd/commit/d80c1790920a17e84da025675530624aee753f1b