# CVE-2022-48846: linux: In the Linux kernel, the following vulnerability has been resolved:  block: release rq qos structures for queue witho...

CVE-2022-48846 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48846, released July 16, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48846
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 16, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  block: release rq qos structures for queue without disk  blkcg_init_queue() may add rq qos structures to request queue, previously blk_cleanup_queue() calls rq_qos_exit() to release them, but commit 8e141f9eb803 ("block: drain file system I/O on del_gendisk") moves rq_qos_exit() into del_gendisk(), so memory leak is caused because queues may not have disk, such as un-present scsi luns, nvme admin queue, ...  Fixes the issue by adding rq_qos_exit() to blk_cleanup_queue() back.  BTW, v5.18 won't need this patch any more since we move blkcg_init_queue()/blkcg_exit_queue() into disk allocation/release handler, and patches have been in for-5.18/block.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.17.3-1 | [DEBIAN-CVE-2022-48846](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48846.md) | Jul 16, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.17.3-1 | [DEBIAN-CVE-2022-48846](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48846.md) | Jul 16, 2024 |
| Linux | linux Debian 14 | 5.17.3-1 | [DEBIAN-CVE-2022-48846](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48846.md) | Jul 16, 2024 |

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