CVE-2026-43184 rnbd-srv: Zero the rsp buffer before using it
An attacker can read uninitialized memory from the kernel response buffer, potentially exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-43184?
CVE-2026-43184 is a high-severity vulnerability in Linux kernel, published on 6 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
rnbd-srv: Zero the rsp buffer before using it
Before using the data buffer to send back the response message, zero it completely. This prevents any stray bytes to be picked up by the client side when there the message is exchanged between different protocol versions.
Which versions are affected by CVE-2026-43184?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43184?
Apply the vendor's patch.
Is CVE-2026-43184 being exploited?
There is no known exploitation of CVE-2026-43184 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43184, DEBIAN-CVE-2026-43184, GHSA-x85v-hg8f-rh5p, ROOT-OS-DEBIAN-11-CVE-2026-43184, ROOT-OS-UBUNTU-2204-CVE-2026-43184, ROOT-OS-UBUNTU-2404-CVE-2026-43184 and 1 more.