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pbuf: fix allocating large PBUF_RAM

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See bug #59974
This commit is contained in:
Simon Goldschmidt 2021-01-30 22:06:46 +01:00
parent 6fee08daab
commit 3e098f90df
1 changed files with 1 additions and 1 deletions
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2
src/core/pbuf.c
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@ -271,7 +271,7 @@ pbuf_alloc(pbuf_layer layer, u16_t length, pbuf_type type)
break; break;
} }
case PBUF_RAM: { case PBUF_RAM: {
u16_t payload_len = (u16_t)(LWIP_MEM_ALIGN_SIZE(offset) + LWIP_MEM_ALIGN_SIZE(length)); mem_size_t payload_len = (mem_size_t)(LWIP_MEM_ALIGN_SIZE(offset) + LWIP_MEM_ALIGN_SIZE(length));
mem_size_t alloc_len = (mem_size_t)(LWIP_MEM_ALIGN_SIZE(SIZEOF_STRUCT_PBUF) + payload_len); mem_size_t alloc_len = (mem_size_t)(LWIP_MEM_ALIGN_SIZE(SIZEOF_STRUCT_PBUF) + payload_len);
/* bug #50040: Check for integer overflow when calculating alloc_len */ /* bug #50040: Check for integer overflow when calculating alloc_len */