CVE-2026-107446 Integer overflow in overlaybd
An integer overflow in containerd overlaybd allows attackers to trigger out-of-bounds heap access via malicious registry blobs, potentially leading to code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-107446?
CVE-2026-107446 is a medium-severity vulnerability in containerd overlaybd, published on 8 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-190
Which versions are affected by CVE-2026-107446?
How do I fix CVE-2026-107446?
No fix has been published for CVE-2026-107446 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-107446 being exploited?
There is no known exploitation of CVE-2026-107446 in the wild and no public exploit code.
Sources
Also known as GHSA-x6rr-cr6c-gvp3.