Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Avoid unnecessary destruction of file_ida file_ida is allocated during cdev open and is freed accordingly during cdev release. This sequence is guaranteed by driver file operations. Therefore, there is no need to destroy an already empty file_ida when the WQ cdev is removed. Worse, ida_free() in cdev release may happen after destruction of file_ida per WQ cdev. This can lead to accessing an id in file_ida after it has been destroyed, resulting in a kernel panic. Remove ida_destroy(&file_ida) to address these issues.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e6fd6d7e5f0fe4a17a08e892afb5db800e7794ec before 9eb15f24a0b9b017b39cde8b8c07243676b63687; affected e6fd6d7e5f0fe4a17a08e892afb5db800e7794ec before 15edb906211bf53e7b5574f7326ab734d6bff4f9; affected e6fd6d7e5f0fe4a17a08e892afb5db800e7794ec before 76e43fa6a456787bad31b8d0daeabda27351a480 |
| Linux / Linux | affected 6.4; unaffected 0 before 6.4; unaffected 6.6.33 through 6.6.*; unaffected 6.9.4 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9eb15f24a0b9b017b39cde8b8c07243676b63687
- https://git.kernel.org/stable/c/15edb906211bf53e7b5574f7326ab734d6bff4f9
- https://git.kernel.org/stable/c/76e43fa6a456787bad31b8d0daeabda27351a480
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.