CVE-2025-26455: 
NixOS vulnerability analysis and mitigation

CVE-2025-26455 is a high-severity vulnerability discovered in multiple functions of NdkMediaCodec.cpp in the Android Framework. The vulnerability affects Android versions 13.0, 14.0, and 15.0. It was disclosed on September 4, 2025, and involves a possible out-of-bounds write due to a heap buffer overflow (NVD, AttackerKB).

The vulnerability is classified as a heap-based buffer overflow (CWE-122) that affects the Android Framework component. It has received a CVSS v3.1 base score of 7.8 (High), with the following vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability specifically impacts the buffer handling in NdkMediaCodec.cpp, where improper bounds checking can lead to out-of-bounds write operations (NVD).

The vulnerability can lead to local escalation of privilege with no additional execution privileges needed. User interaction is not required for exploitation, making it particularly concerning for device security. The high CVSS score indicates potential severe impacts on confidentiality, integrity, and availability of the affected system (NVD).

Google has released patches for this vulnerability in the June 2025 Android Security Bulletin. Users should update their devices to security patch level 2025-06-01 or later to address this vulnerability. The fix has been implemented in the Android Open Source Project (AOSP) repository (Android Security Bulletin, ASEC).