| Título | Kamailio Project Kamailio SIP Server 5.5 NULL Pointer Dereference |
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| Descrição | Kamailio v5.5 crashes during configuration parsing due to a NULL pointer dereference in the `while_cmd` grammar rule. When the `while(...)` expression (`rval_expr`) fails to parse and `$2` is NULL, the error branch still calls `yyerror_at(&$2->fpos, ...)`, leading to a dereference of an invalid pointer inside `yyerror_at()` and a SIGSEGV.Impact: Denial of Service on startup. |
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| Fonte | ⚠️ https://shimo.im/docs/vVqRMVMlrycMO63y/ |
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| Utilizador | zh_vul (UID 91488) |
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| Submissão | 11/10/2025 10h38 (há 8 meses) |
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| Moderação | 25/10/2025 13h52 (14 days later) |
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| Estado | Aceite |
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| Entrada VulDB | 329877 [Kamailio 5.5 Grammar Rule src/core/cfg.y yyerror_at Negação de Serviço] |
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| Pontos | 20 |
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