CVE-2025-29088: 
SQLite vulnerability analysis and mitigation

In SQLite 3.49.0 before 3.49.1, a vulnerability was discovered in the sqlite3dbconfig C-language API (CVE-2025-29088). The issue involves certain argument values that can trigger a denial of service through an application crash. The vulnerability was discovered in February 2025 and affects SQLite version 3.49.0 (NVD, SQLite CVEs).

The vulnerability stems from an integer overflow bug in the setupLookaside function where an sz*nBig multiplication is not cast to a 64-bit integer, leading to incorrect memory allocations. The issue specifically occurs in the SQLITEDBCONFIGLOOKASIDE component when calculating memory allocations for lookaside buffer blocks. The vulnerability has received multiple CVSS scores: MITRE assigned a CVSS v3.1 score of 5.6 (Medium) with vector AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L, while CISA-ADP rated it at 7.5 (High) with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (SQLite Forum, NVD).

The vulnerability can result in a denial of service through application crashes due to incorrect memory allocations. When exploited, the integer overflow can cause the lookaside buffer to fail to divide correctly, and the allocated memory may exceed the intended size. This could potentially lead to crashes or allow attackers to perform arbitrary memory writes (SQLite Forum).

The vulnerability was fixed in SQLite version 3.49.1, released on February 18, 2025. The fix involves adding proper type casting to prevent integer overflow in the calculation of memory allocations. Users are recommended to upgrade to version 3.49.1 or later to address this vulnerability (SQLite Release Log, SQLite CVEs).