CVE-2026-31494
Description
A flaw was found in the Linux kernel's macb network driver. A local user can exploit this vulnerability due to an out-of-bounds write in the gem_get_ethtool_stats function. This occurs when the driver incorrectly copies data using the maximum number of queues instead of the active number, leading to memory corruption. This can result in a kernel crash, causing a Denial of Service (DoS) for the system.
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
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