CVE-2026-120058

The record

psqlODBC sizes its row cache from the column count of a cursor's first result, but recomputes the column count from each later FETCH reply without checking that it matches. A server not trusted under current SSL settings can answer a later FETCH with more columns and make the driver write tuple records past the end of the heap allocation. A keyset reply with fewer columns than the key fields also underflows the unsigned field count. This is reachable with UseDeclareFetch enabled. Versions before psqlODBC 18.00.0006 are affected.

Affected packages

Related vulnerabilities

• CVE-2026-121727 Kore before 4.3.0 contains an integer underflow vulnerability in HTTP request body… CWE-191
• CVE-2026-61497 TinyUSB before 0.20.1 contains an integer underflow vulnerability in the HID host report… CWE-191
• CVE-2026-120060 psqlODBC trusts counts and lengths in server data in three places. CWE-191
• CVE-2026-20576 In afe, there is a possible out of bounds write due to a missing bounds check. CWE-191
• CVE-2026-20572 In adsp, there is a possible out of bounds write due to an integer overflow. CWE-191
• CVE-2026-111735 P-Net before 1.0.3 contains an integer underflow in pf_cpm_c_data_ind(). CWE-191
• CVE-2026-103411 An Integer Underflow vulnerability in DhcpMessageDecoder in Juniper Networks Session… CWE-191
• CVE-2026-112625 An integer underflow was addressed with improved input validation. CWE-191