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fix(wlr/taskbar): fix wl_array out-of-bounds access 

wl_array->size contains the number of bytes in the array instead of the
number of elements.
This commit is contained in:
Aleksei Bavshin 2021-01-06 07:03:14 -08:00
parent 1f620828c2
commit ef9c3ef1cb
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GPG Key ID: 4F071603387A382A
1 changed files with 7 additions and 7 deletions
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14
src/modules/wlr/taskbar.cpp
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@ -367,16 +367,16 @@ void Task::handle_output_leave(struct wl_output *output)
void Task::handle_state(struct wl_array *state) void Task::handle_state(struct wl_array *state)
{ {
state_ = 0; state_ = 0;
for (auto* entry = static_cast<uint32_t*>(state->data); size_t size = state->size / sizeof(uint32_t);
entry < static_cast<uint32_t*>(state->data) + state->size; for (size_t i = 0; i < size; ++i) {
entry++) { auto entry = static_cast<uint32_t*>(state->data)[i];
if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MAXIMIZED) if (entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MAXIMIZED)
state_ |= MAXIMIZED; state_ |= MAXIMIZED;
if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MINIMIZED) if (entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MINIMIZED)
state_ |= MINIMIZED; state_ |= MINIMIZED;
if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_ACTIVATED) if (entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_ACTIVATED)
state_ |= ACTIVE; state_ |= ACTIVE;
if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN) if (entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN)
state_ |= FULLSCREEN; state_ |= FULLSCREEN;
} }
} }