bfq: Make sure bfqg for which we are queueing requests is online
Bios queued into BFQ IO scheduler can be associated with a cgroup that
was already offlined. This may then cause insertion of this bfq_group
into a service tree. But this bfq_group will get freed as soon as last
bio associated with it is completed leading to use after free issues for
service tree users. Fix the problem by making sure we always operate on
online bfq_group. If the bfq_group associated with the bio is not
online, we pick the first online parent.
Metrics
Affected Vendors & Products
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Wed, 30 Apr 2025 15:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Weaknesses | CWE-99 |
Tue, 25 Mar 2025 14:00:00 +0000
Type | Values Removed | Values Added |
---|---|---|
First Time appeared |
Linux
Linux linux Kernel |
|
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
Vendors & Products |
Linux
Linux linux Kernel |
Wed, 05 Mar 2025 22:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Weaknesses | CWE-416 | |
Metrics |
cvssV3_1
|
ssvc
|
Thu, 27 Feb 2025 01:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
References |
| |
Metrics |
threat_severity
|
cvssV3_1
|
Wed, 26 Feb 2025 02:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Description | In the Linux kernel, the following vulnerability has been resolved: bfq: Make sure bfqg for which we are queueing requests is online Bios queued into BFQ IO scheduler can be associated with a cgroup that was already offlined. This may then cause insertion of this bfq_group into a service tree. But this bfq_group will get freed as soon as last bio associated with it is completed leading to use after free issues for service tree users. Fix the problem by making sure we always operate on online bfq_group. If the bfq_group associated with the bio is not online, we pick the first online parent. | |
Title | bfq: Make sure bfqg for which we are queueing requests is online | |
References |
|
|

Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-05-04T08:37:06.106Z
Reserved: 2025-02-26T02:08:31.567Z
Link: CVE-2022-49411

Updated: 2025-03-05T21:14:18.508Z

Status : Analyzed
Published: 2025-02-26T07:01:17.613
Modified: 2025-03-25T13:42:10.430
Link: CVE-2022-49411


No data.