CVE-2025-47917_CVE-2025-47917

8.9 / 10

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H

Description

Mbed TLS before 3.6.4 allows a use-after-free in certain situations of applications that are developed in accordance with the documentation. The function mbedtls_x509_string_to_names() takes a head argument that is documented as an output argument. The documentation does not suggest that the function will free that pointer; however, the function does call mbedtls_asn1_free_named_data_list() on that argument, which performs a deep free(). As a result, application code that uses this function (relying only on documented behavior) is likely to still hold pointers to the memory blocks that were freed, resulting in a high risk of use-after-free or double-free. In particular, the two sample programs x509/cert_write and x509/cert_req are affected (use-after-free if the san string contains more than one DN).

Basic Information

ID CVE-2025-47917

Source mitre

Published Jul 20, 2025 at 00:00

Modified Jul 22, 2025 at 14:22

Affected Product

Vendor Mbed

Product mbedtls

Affected Versions Mbed mbedtls 0

CWE Classification

CWE-416

References

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    "published": "2025-07-20T00:00:00.000Z",
    "modified": "2025-07-22T14:22:38.872Z",
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