| 标题 | Kamailio Project Kamailio SIP Server 5.5 NULL Pointer Dereference |
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| 描述 | 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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| 来源 | ⚠️ https://shimo.im/docs/vVqRMVMlrycMO63y/ |
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| 用户 | zh_vul (UID 91488) |
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| 提交 | 2025-10-11 10時38分 (12 月前) |
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| 管理 | 2025-10-25 13時52分 (14 days later) |
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| 状态 | 已接受 |
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| VulDB条目 | 329877 [Kamailio 5.5 Grammar Rule src/core/cfg.y yyerror_at 拒绝服务] |
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| 积分 | 20 |
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