Description
In the Linux kernel, the following vulnerability has been resolved:
null_blk: free global tag_set on init error path
If shared_tags is enabled, null_setup_tagset() allocates the global tag_set via null_init_global_tag_set(). If device creation later fails, err_dev destroys the default devices and calls unregister_blkdev(), but never frees the global tag_set. Since module init failed, null_exit() is never invoked, so the global tag_set's tags and maps are permanently leaked.
Free the global tag_set in err_dev, matching null_exit() which does if (tag_set.ops) blk_mq_free_tag_set(&tag_set).
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 82f402fefa50f1675bf918bcd009981bd6b30ac8, < 0b2faa330184340d9418ad2c627c2ae881772e33; >= 82f402fefa50f1675bf918bcd009981bd6b30ac8, < 665c94554ff0d5d88caae7f40c16c8e0a3369eda; >= 82f402fefa50f1675bf918bcd009981bd6b30ac8, < 2882e1450fa4597811a951196e07553ea134eb31; >= 82f402fefa50f1675bf918bcd009981bd6b30ac8, < 2b59484ac1e64dd78dbe8c6140891c6308085a75; >= 82f402fefa50f1675bf918bcd009981bd6b30ac8, < 081cf37e8a0e00cd91d6df53172c9d928790a798; >= 82f402fefa50f1675bf918bcd009981bd6b30ac8, < 5a1c5ff3a49ba93a1fd0b70537e7a0164071760d |
| Linux | Linux | 4.13 |
References
- https://git.kernel.org/stable/c/081cf37e8a0e00cd91d6df53172c9d928790a798
- https://git.kernel.org/stable/c/0b2faa330184340d9418ad2c627c2ae881772e33
- https://git.kernel.org/stable/c/2882e1450fa4597811a951196e07553ea134eb31
- https://git.kernel.org/stable/c/2b59484ac1e64dd78dbe8c6140891c6308085a75
- https://git.kernel.org/stable/c/5a1c5ff3a49ba93a1fd0b70537e7a0164071760d
- https://git.kernel.org/stable/c/665c94554ff0d5d88caae7f40c16c8e0a3369eda
Timeline
- Published
- Sep 17, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received