This vulnerability (CVE-2026-21375) involves a buffer over-read condition classified under CWE-126 in Qualcomm Snapdragon devices. The issue arises from improper validation of output buffer sizes during IOCTL processing, leading to memory corruption. Affected products include a wide range of Snapdragon platforms and associated hardware components. The CVSS 3.1 score of 7.8 reflects high impact with local attack vector, low complexity, low privileges required, and no user interaction needed. The vulnerability can compromise confidentiality, integrity, and availability of the affected systems. No patch or official remediation level has been disclosed by Qualcomm as of the publication date.

Successful exploitation of this vulnerability can result in memory corruption, potentially allowing an attacker with local access and low privileges to compromise system confidentiality, integrity, and availability. The high CVSS score indicates serious consequences if exploited, but no known exploits are currently reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level has been published by Qualcomm, users should monitor Qualcomm's advisories for updates. Until a patch is available, limit local access to affected devices and apply any recommended security controls from Qualcomm if provided.