CVE-2026-86314 Integer overflow in Walrus
A remote attacker can cause denial of service via a crafted WebAssembly module exploiting an integer overflow in the memory bounds check.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86314?
CVE-2026-86314 is a medium-severity vulnerability in Samsung Opensource Walrus, published on 7 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Integer overflow in the source-bounds check in Memory::init() (src/runtime/Memory.cpp) in Samsung walrus on all platforms allows a remote attacker to cause an out-of-bounds heap read and denial of service via a crafted WebAssembly module in which a 32-bit unsigned addition wraps around and bypasses the bounds check.
This issue affects Walrus: ff3bf5ff5c4878f8e5572c9593d303f6bc997443.
Weakness: CWE-190
Which versions are affected by CVE-2026-86314?
How do I fix CVE-2026-86314?
No fix has been published for CVE-2026-86314 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-86314 being exploited?
There is no known exploitation of CVE-2026-86314 in the wild and no public exploit code.
Sources
Also known as GHSA-28r8-6gx4-j6mm.