CVE-2025-30258
In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."
| Software | From | Fixed in |
|---|---|---|
| gnupg / gnupg | - | 2.4.8 |
| gnupg / gnupg | 2.5.0 | 2.5.5 |
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