CVE-2026-24092: Improper Validation of Syntactic Correctness of Input in Display

Synopsis

Memory corruption vulnerability in Qualcomm Snapdragon display handling allows an attacker with physical access and privileged credentials to corrupt memory by sending malformed fastboot commands to set the display mode. The attacker must be physically present at the device and hold a high-privilege account to issue fastboot commands. Successful exploitation enables full control over confidentiality, integrity, and availability of the affected system, including reading sensitive data, modifying system state, and crashing the device. HarborGuard is tracking this advisory and will make a patched-image rebuild available as soon as Qualcomm publishes a fix.

HarborGuard Coverage

Exploit Conditions

• Network reachabilityNot required

  Physical proximity to the device is required; the attacker does not need network access to reach the vulnerable component.

• AuthenticationRequired

  A high-privilege or admin account is needed to issue fastboot commands against the display mode interface.

• Victim interactionNot required

  No user interaction is required; the attacker executes the attack directly without involving another person.

• Attack complexityDetail

  Exploit conditions are straightforward and reliable with no race conditions or environment-specific prerequisites to satisfy.

Blast Radius

• Reads sensitive data stored in memory regions accessible after the corruption, including credentials or session material present on the device.
• Modifies system memory, allowing persistent changes to device state or firmware-level configuration.
• Crashes the affected device or display subsystem, causing a full denial of service.
• The scope change (S:C) means impact can extend beyond the vulnerable component itself, reaching other isolated components on the same SoC.