CVE-2026-64449
Description
A flaw was found in the Linux kernel's vme_user module. This vulnerability allows a local user to cause a slab-out-of-bounds write or read due to improper validation of buffer sizes in the VME slave path. When a user-supplied VME window size exceeds the internal buffer, data can be copied beyond the allocated memory, leading to memory corruption. This can result in a system crash (denial of service) or potentially lead to further exploitation.
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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