CVE-2023-54209

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> block: fix blktrace debugfs entries leakage<br /> <br /> Commit 99d055b4fd4b ("block: remove per-disk debugfs files in<br /> blk_unregister_queue") moves blk_trace_shutdown() from<br /> blk_release_queue() to blk_unregister_queue(), this is safe if blktrace<br /> is created through sysfs, however, there is a regression in corner<br /> case.<br /> <br /> blktrace can still be enabled after del_gendisk() through ioctl if<br /> the disk is opened before del_gendisk(), and if blktrace is not shutdown<br /> through ioctl before closing the disk, debugfs entries will be leaked.<br /> <br /> Fix this problem by shutdown blktrace in disk_release(), this is safe<br /> because blk_trace_remove() is reentrant.