AZL-68550
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-68550.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-68550
- Upstream
- Published
- 2024-12-29T09:15:05Z
- Modified
- 2026-04-21T04:38:27Z
- Summary
- CVE-2024-56709 affecting package kernel 5.15.200.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
io_uring: check if iowq is killed before queuing
task work can be executed after the task has gone through io_uring termination, whether it's the final task_work run or the fallback path. In this case, task work will find ->io_wq being already killed and null'ed, which is a problem if it then tries to forward the request to io_queue_iowq(). Make io_queue_iowq() fail requests in this case.
Note that it also checks PF_KTHREAD, because the user can first close a DEFER_TASKRUN ring and shortly after kill the task, in which case ->iowq check would race.
- References