CVE-2024-56709
Last modified
CVE-2024-56709 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 5.14.1, < 6.1.122 | — |
| Linux | Linux Kernel | >= 6.2, < 6.6.68 | — |
| Linux | Linux Kernel | >= 6.7, < 6.12.7 | — |
| Linux | Linux Kernel | 5.14 | — |
| Linux | Linux Kernel | 6.13 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2024-56709?
How severe is CVE-2024-56709?
How do I fix CVE-2024-56709?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2024
- CVE-2024-56703In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-56704In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2024-56705In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-56706In the Linux kernel, the following vulnerability has been re…6.3
- CVE-2024-56707In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-56708In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2024-5671Insecure Deserialization in some workflows of the IPS Manage…9.8
- CVE-2024-56710In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-56711In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-56712In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-56713In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-56714In the Linux kernel, the following vulnerability has been re…5.5
Are you affected by CVE-2024-56709?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST