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Code Issues Packages Projects Releases 10 Wiki Activity

DisplayServer (Linux): fix heap-buffer-overflow reading

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This commit is contained in:
李通洲
2023-07-14 11:19:16 +08:00
parent d3d121a965
commit 872b108e52
1 changed files with 6 additions and 5 deletions
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src/detection/displayserver/linux/xcb.c
+6 -5
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@@ -17,6 +17,7 @@ typedef struct XcbPropertyData
FF_LIBRARY_SYMBOL(xcb_get_property_value_length)
FF_LIBRARY_SYMBOL(xcb_get_atom_name)
FF_LIBRARY_SYMBOL(xcb_get_atom_name_name)
FF_LIBRARY_SYMBOL(xcb_get_atom_name_name_length)
FF_LIBRARY_SYMBOL(xcb_get_atom_name_reply)
} XcbPropertyData;
@@ -30,6 +31,7 @@ static bool xcbInitPropertyData(void* libraryHandle, XcbPropertyData* propertyDa
FF_LIBRARY_LOAD_SYMBOL_PTR(libraryHandle, propertyData, xcb_get_property_value_length, false)
FF_LIBRARY_LOAD_SYMBOL_PTR(libraryHandle, propertyData, xcb_get_atom_name, false)
FF_LIBRARY_LOAD_SYMBOL_PTR(libraryHandle, propertyData, xcb_get_atom_name_name, false)
FF_LIBRARY_LOAD_SYMBOL_PTR(libraryHandle, propertyData, xcb_get_atom_name_name_length, false)
FF_LIBRARY_LOAD_SYMBOL_PTR(libraryHandle, propertyData, xcb_get_atom_name_reply, false)
return true;
@@ -293,11 +295,10 @@ static bool xcbRandrHandleMonitor(XcbRandrData* data, xcb_randr_monitor_info_t*
data->propData.ffxcb_get_atom_name(data->connection, monitor->name),
NULL
);
char* buf = data->propData.ffxcb_get_atom_name_name(nameReply);
FF_STRBUF_AUTO_DESTROY name = ffStrbufCreateS(buf);
// name.chars = buf;
// name.allocated = (uint32_t) strlen(buf);
// name.length = name.allocated;
FF_STRBUF_AUTO_DESTROY name = ffStrbufCreateNS(
(uint32_t) data->propData.ffxcb_get_atom_name_name_length(nameReply),
data->propData.ffxcb_get_atom_name_name(nameReply)
);
bool foundOutput = false;