| Title | Kamailio Project Kamailio SIP Server 5.5 NULL Pointer Dereference |
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| Description | Kamailio v5.5 contains a NULL pointer dereference in configuration parsing. The parser action for certain expression constructs calls `rve_is_constant($3)` without verifying `$3` is non-NULL; a crafted configuration can make `$3` NULL and cause `rve_is_constant()` to dereference NULL and crash the process. Impact: Denial of Service on startup. |
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| Source | ⚠️ https://shimo.im/docs/aBAYMVMB2jUP9jAj/ |
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| User | zh_vul (UID 91488) |
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| Submission | 10/11/2025 10:35 (8 months ago) |
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| Moderation | 10/25/2025 13:52 (14 days later) |
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| Status | Accepted |
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| VulDB entry | 329876 [Kamailio 5.5 src/core/rvalue.c rve_is_constant null pointer dereference] |
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| Points | 19 |
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