CVE-2023-53261

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> coresight: Fix memory leak in acpi_buffer-&gt;pointer<br /> <br /> There are memory leaks reported by kmemleak:<br /> ...<br /> unreferenced object 0xffff00213c141000 (size 1024):<br /> comm "systemd-udevd", pid 2123, jiffies 4294909467 (age 6062.160s)<br /> hex dump (first 32 bytes):<br /> 04 00 00 00 02 00 00 00 18 10 14 3c 21 00 ff ff ...........] __kmem_cache_alloc_node+0x2f8/0x348<br /> [] __kmalloc+0x58/0x108<br /> [] acpi_os_allocate+0x2c/0x68<br /> [] acpi_ut_initialize_buffer+0x54/0xe0<br /> [] acpi_evaluate_object+0x388/0x438<br /> [] acpi_evaluate_object_typed+0xe8/0x240<br /> [] coresight_get_platform_data+0x1b4/0x988 [coresight]<br /> ...<br /> <br /> The ACPI buffer memory (buf.pointer) should be freed. But the buffer<br /> is also used after returning from acpi_get_dsd_graph().<br /> Move the temporary variables buf to acpi_coresight_parse_graph(),<br /> and free it before the function return to prevent memory leak.