CVE-2026-23262 gve: Fix stats report corruption on queue count change
A memory corruption vulnerability in the Linux kernel gve driver allows attackers to cause memory corruption or denial of service via queue count changes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-23262?
CVE-2026-23262 is a high-severity memory corruption vulnerability in Linux kernel, published on 18 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
gve: Fix stats report corruption on queue count change
The driver and the NIC share a region in memory for stats reporting. The NIC calculates its offset into this region based on the total size of the stats region and the size of the NIC's stats.
When the number of queues is changed, the driver's stats region is resized. If the queue count is increased, the NIC can write past the end of the allocated stats region, causing memory corruption. If the queue count is decreased, there is a gap between the driver and NIC stats, leading to incorrect stats reporting.
This change fixes the issue by allocating stats region with maximum size, and the offset calculation for NIC stats is changed to match with the calculation of the NIC.
Weakness: CWE-787
Which versions are affected by CVE-2026-23262?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23262?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-23262 being exploited?
There is no known exploitation of CVE-2026-23262 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-23262, DEBIAN-CVE-2026-23262, GHSA-2rm5-c5x9-v5x4, ROOT-OS-UBUNTU-2204-CVE-2026-23262, ROOT-OS-UBUNTU-2404-CVE-2026-23262, UBUNTU-CVE-2026-23262.