Description
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.
Metrics
No CVSS score has been published yet.
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 99d055b4fd4bbb309c6cdb51a0d420669f777944, < aa07e56c6a9c7558165690d14eed4fe8babf34fb; >= 99d055b4fd4bbb309c6cdb51a0d420669f777944, < 7149e57cf01184fba175589f8fbe9fbf33be02e1; >= 99d055b4fd4bbb309c6cdb51a0d420669f777944, < 942e81650b81b4ca62f1d8c61de455c9e7c7e6ca; >= 99d055b4fd4bbb309c6cdb51a0d420669f777944, < dd7de3704af9989b780693d51eaea49a665bd9c2 |
| Linux | Linux | 5.19 |
References
Timeline
- Published
- Dec 30, 2025
- Last modified
- Oct 28, 2026
- NVD status
- Deferred