Heap buffer overflow in Skia initializeSwizzler

Successful exploitation can cause heap memory corruption via an out-of-bounds write and may enable remote elevation of privilege on the affected target. Because the flaw is reachable through processing of crafted content and the provided content states that no additional execution privileges and no user interaction are required, the impact includes the possibility of attacker-controlled code execution in a more privileged context or equivalent privilege gain, depending on the surrounding execution environment.

Until patched builds are deployed, reduce exposure by limiting or disabling processing of untrusted BMP images in components that rely on the vulnerable Skia codec path, especially in remotely reachable or privileged contexts. Sandbox image parsing where possible, restrict attack surface for services that automatically decode image content, and use exploit mitigations such as hardened allocators, ASLR, CFI, and process isolation where available. These measures may reduce exploit reliability but are not substitutes for patching.

Apply the vendor-provided patch for CVE-2025-26416 in the affected Skia/Android codebase. Because the vulnerable code is identified as initializeSwizzler in SkBmpStandardCodec.cpp, remediation should consist of updating to a version that corrects the bounds checking and prevents heap out-of-bounds writes during BMP decoding. If this issue is addressed through an Android security update, deploy the relevant security patch level from the device or platform vendor.