mirror of https://github.com/thesofproject/sof.git
ipc-helper.c: reject invalid SOF_MEM_CAPS_* bits
Fixes lack of SOF_MEM_CAPS_* input validation found in #8832 Signed-off-by: Marc Herbert <marc.herbert@intel.com>
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@ -86,6 +86,8 @@ struct sof_ipc_comp {
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#define SOF_MEM_CAPS_CACHE BIT(6) /**< cacheable */
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#define SOF_MEM_CAPS_EXEC BIT(7) /**< executable */
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#define SOF_MEM_CAPS_L3 BIT(8) /**< L3 memory */
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/* Don't forget to update when adding a new bit to the ABI. */
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#define SOF_MEM_CAPS_LOWEST_INVALID BIT(9) /**< Used for input validation */
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/*
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* overrun will cause ring buffer overwrite, instead of XRUN.
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@ -36,6 +36,15 @@
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LOG_MODULE_DECLARE(ipc, CONFIG_SOF_LOG_LEVEL);
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static bool valid_ipc_buffer_desc(const struct sof_ipc_buffer *desc)
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{
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if (desc->caps >= SOF_MEM_CAPS_LOWEST_INVALID)
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return false;
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/* TODO: check desc->size and maybe other things */
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return true;
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}
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/* create a new component in the pipeline */
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struct comp_buffer *buffer_new(const struct sof_ipc_buffer *desc, bool is_shared)
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{
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@ -44,6 +53,12 @@ struct comp_buffer *buffer_new(const struct sof_ipc_buffer *desc, bool is_shared
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tr_info(&buffer_tr, "buffer new size 0x%x id %d.%d flags 0x%x",
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desc->size, desc->comp.pipeline_id, desc->comp.id, desc->flags);
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if (!valid_ipc_buffer_desc(desc)) {
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tr_err(&buffer_tr, "Invalid buffer desc! New size 0x%x id %d.%d caps 0x%x",
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desc->size, desc->comp.pipeline_id, desc->comp.id, desc->caps);
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return NULL;
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}
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/* allocate buffer */
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buffer = buffer_alloc(desc->size, desc->caps, desc->flags, PLATFORM_DCACHE_ALIGN,
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is_shared);
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@ -76,6 +76,9 @@ LOG_MODULE_DECLARE(ipc, CONFIG_SOF_LOG_LEVEL);
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#define iGS(x) ((x) & SOF_GLB_TYPE_MASK)
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#define iCS(x) ((x) & SOF_CMD_TYPE_MASK)
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/* FIXME: assert() is most likely turned off in production builds
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* https://open-std.org/jtc1/sc22/wg14/www/docs/n1967.htm
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*/
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#define _IPC_COPY_CMD(rx, tx, rx_size) \
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do { \
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int ___ret; \
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