CVE-2026-63965

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> iio: pressure: bmp280: fix stack leak in bmp580 trigger handler<br /> <br /> bmp580_trigger_handler() declares its scan buffer on the stack without<br /> an initializer and then memcpy()s 3 bytes of 24-bit sensor data into<br /> each 4-byte __le32 field. The high byte of comp_temp and comp_press is<br /> left uninitialized, and the channel storagebits is 32, so two bytes of<br /> stack are pushed to userspace per scan.<br /> <br /> This is a regression from when the buffer lived in the private data, the<br /> move to a stack-local struct dropped the implicit zeroing.<br /> bme280_trigger_handler() was fixed up to handle this bug, but this<br /> driver was not fixed because there was no padding hole, but rather a<br /> short-fill issue.<br /> <br /> Fix this all by just zero-initializing the structure on the stack.