OpenSC: `sc_compacttlv_find_tag` can return out-of-bounds pointers

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CVE-2025-66038

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, sccompacttlvfindtag searches a compact-TLV buffer for a given tag. In compact-TLV, a single byte encodes the tag high nibble and value length low nibble. With a 1-byte buffer 0x0A, the encoded element claims tag=0...

CVE-2025-66038

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, sccompacttlvfindtag searches a compact-TLV buffer for a given tag. In compact-TLV, a single byte encodes the tag high nibble and value length low nibble. With a 1-byte buffer 0x0A, the encoded element claims tag=0...

OpenSC 安全漏洞

OpenSC is an open-source smart card tool and middleware developed by OpenSC. Versions of OpenSC prior to 0.27.0 contained security vulnerabilities. These vulnerabilities stemmed from the sccompacttlvfindtag function not verifying the length of the data being returned, which could lead to the retu...

PT-2026-29082

Name of the Vulnerable Software and Affected Versions OpenSC versions prior to 0.27.0 Description OpenSC is an open source smart card tools and middleware. The sc compacttlv find tag function searches a compact-TLV buffer for a given tag. In compact-TLV, a single byte encodes the tag high nibble...