CVE-2026-23262: gve: Fix stats report corruption on queue count change
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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-23262?
CVE-2026-23262 is classified as a moderate severity vulnerability in the Linux kernel.
How does CVE-2026-23262 affect Linux kernel performance?
CVE-2026-23262 can lead to stats report corruption, potentially impacting monitoring and performance analysis.
How do I fix CVE-2026-23262?
To fix CVE-2026-23262, update your Linux kernel to the latest stable version where the vulnerability has been patched.
Which versions of Linux kernel are affected by CVE-2026-23262?
CVE-2026-23262 affects specific versions of the Linux kernel that include the gve driver prior to the patch.
What is the nature of CVE-2026-23262 vulnerability?
CVE-2026-23262 involves a memory corruption issue due to the mishandling of stats reporting during queue count changes.