containerd overlaybd up to 1.0.18 LSMT Index Loading file.cpp do_load_index index_bytes integer overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in containerd overlaybd up to 1.0.18. This vulnerability affects the function do_load_index of the file src/overlaybd/lsmt/file.cpp of the component LSMT Index Loading. The manipulation of the argument index_bytes results in integer overflow. This vulnerability is reported as CVE-2026-107446. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in containerd overlaybd up to 1.0.18. Affected is the function do_load_index of the file src/overlaybd/lsmt/file.cpp of the component LSMT Index Loading. The manipulation of the argument index_bytes with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-107446 since 10/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/08/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Virtualization Software

Vendor

• containerd

Name

• overlaybd

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13
• 1.0.14
• 1.0.15
• 1.0.16
• 1.0.17
• 1.0.18

Website

• Product: https://github.com/containerd/overlaybd/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion