CVE-2026-71974
Description
A flaw was found in U-Boot. The bootloader fails to properly validate image sizes against partition boundaries when reading Android boot partitions. An attacker with physical access to the device can exploit this vulnerability by connecting crafted boot media with oversized headers, causing an out-of-bounds write into bootloader memory. On devices lacking Android Verified Boot (AVB) protection, this issue can result in memory corruption or a Denial of Service (DoS).
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
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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