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.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | Jul 30, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jul 16, 2024 |
| Ubuntu | — | Upgrade linux-gcpUpgrade linuxUpgrade linux-ibmUpgrade linux-azure-5.15Upgrade linux-awsUpgrade linux-hwe-5.15Upgrade linux-kvmUpgrade linux-lowlatencyUpgrade linux-lowlatency-hwe-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-azureUpgrade linux-realtimeUpgrade linux-gkeUpgrade linux-intel-iotgUpgrade linux-raspiUpgrade linux-oracle | Nov 19, 2024 | Jul 16, 2024 |
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