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ipc: header size validation fix 

This patch will deny IPC headers with size 0

Signed-off-by: Adrian Bonislawski <adrian.bonislawski@linux.intel.com>
This commit is contained in:
Adrian Bonislawski 2020-06-05 10:47:30 +02:00 committed by Liam Girdwood
parent aef54e4066
commit cc0f713e75
1 changed files with 2 additions and 2 deletions
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4
src/ipc/handler.c
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@ -122,8 +122,8 @@ struct sof_ipc_cmd_hdr *mailbox_validate(void)
mailbox_hostbox_read(hdr, SOF_IPC_MSG_MAX_SIZE, 0, sizeof(*hdr)); mailbox_hostbox_read(hdr, SOF_IPC_MSG_MAX_SIZE, 0, sizeof(*hdr));
/* validate component header */ /* validate component header */
if (hdr->size > SOF_IPC_MSG_MAX_SIZE) { if (hdr->size < sizeof(*hdr) || hdr->size > SOF_IPC_MSG_MAX_SIZE) {
tr_err(&ipc_tr, "ipc: msg too big at 0x%x", hdr->size); tr_err(&ipc_tr, "ipc: invalid size 0x%x", hdr->size);
return NULL; return NULL;
} }