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CVE-2025-68724 is an integer-overflow vulnerability in the Linux kernel's crypto asymmetric_keys subsystem. The asymmetric_key_generate_id() function adds binary blob lengths and the size of an asymmetric_key_id structure without sufficient overflow checking. Maliciously large X.509 certificate fields, including ASN.1 INTEGER serial numbers and issuer names, can overflow this allocation-size calculation and potentially cause a buffer overflow during subsequent data copying. The issue was introduced in Linux kernel 3.18.
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An integer overflow in the Linux kernel's asymmetric_key_generate_id function can result in a buffer overflow when processing oversized X.509 certificate fields. The fix uses check_add_overflow() to validate length calculations and returns ERR_PTR(-EOVERFLOW) on overflow. The reference assigns a CVSS v3 base score of 7.8, with local access and low privileges required.
An integer-overflow vulnerability in the Linux kernel's asymmetric_key_generate_id function can cause a buffer overflow when processing oversized X.509 certificate fields. The fix checks for overflow when calculating allocation sizes and returns ERR_PTR(-EOVERFLOW). The advisory assigns CVSS v3 severity High (7.8), with local access and low privileges required and potential high confidentiality, integrity, and availability impacts.
An integer overflow in the Linux kernel's asymmetric_key_generate_id function can cause a buffer overflow when processing oversized X.509 certificate fields, including serial numbers and issuer names. The listed CVSS v3 score is 7.8, with local access and low privileges required and potential high impacts on confidentiality, integrity, and availability. The fix checks for arithmetic overflow and returns an error before unsafe copying occurs.
A Linux kernel crypto/asymmetric_keys integer-overflow and potential buffer-overflow vulnerability in asymmetric_key_generate_id. Maliciously large X.509 certificate fields, including ASN.1 INTEGER serial numbers or issuer names, can trigger unsafe size calculations during identifier generation.
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