Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: block: fix blktrace debugfs entries leakage Commit 99d055b4fd4b ("block: remove per-disk debugfs files in blk_unregister_queue") moves blk_trace_shutdown() from blk_release_queue() to blk_unregister_queue(), this is safe if blktrace is created through sysfs, however, there is a regression in corner case. blktrace can still be enabled after del_gendisk() through ioctl if the disk is opened before del_gendisk(), and if blktrace is not shutdown through ioctl before closing the disk, debugfs entries will be leaked. Fix this problem by shutdown blktrace in disk_release(), this is safe because blk_trace_remove() is reentrant.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 99d055b4fd4bbb309c6cdb51a0d420669f777944 before aa07e56c6a9c7558165690d14eed4fe8babf34fb; affected 99d055b4fd4bbb309c6cdb51a0d420669f777944 before 7149e57cf01184fba175589f8fbe9fbf33be02e1; affected 99d055b4fd4bbb309c6cdb51a0d420669f777944 before 942e81650b81b4ca62f1d8c61de455c9e7c7e6ca; affected 99d055b4fd4bbb309c6cdb51a0d420669f777944 before dd7de3704af9989b780693d51eaea49a665bd9c2 |
| Linux / Linux | affected 5.19; unaffected 0 before 5.19; unaffected 6.1.39 through 6.1.*; unaffected 6.3.13 through 6.3.*; unaffected 6.4.4 through 6.4.*; unaffected 6.5 through * |
CWE
No CWE identifiers supplied.