fix: prevent IPC slot reuse during object teardown

2026-07-30 17:46:38 +01:00
parent 471903bafb
commit a965e67c93
3 changed files with 56 additions and 11 deletions
@@ -121,8 +121,13 @@ struct TrueTypeFont {
            return false;
        }

-        montauk::read(fd, data, 0, size);
+        int read_result = montauk::read(fd, data, 0, size);
        montauk::close(fd);
+        if (read_result < 0 || (uint64_t)read_result != size) {
+            montauk::free(data);
+            data = nullptr;
+            return false;
+        }

        // stbtt_GetFontOffsetForIndex returns -1 for non-font data; passing
        // that into stbtt_InitFont makes it dereference data + (uint32)-1.