CVE-2024-41080 io_uring: fix possible deadlock in io_register_iowq_max_workers()

What is CVE-2024-41080?

CVE-2024-41080 is a medium-severity vulnerability in Linux kernel, published on 29 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

io_uring: fix possible deadlock in io_register_iowq_max_workers()

The io_register_iowq_max_workers() function calls io_put_sq_data(), which acquires the sqd->lock without releasing the uring_lock. Similar to the commit 009ad9f0c6ee ("io_uring: drop ctx->uring_lock before acquiring sqd->lock"), this can lead to a potential deadlock situation.

To resolve this issue, the uring_lock is released before calling io_put_sq_data(), and then it is re-acquired after the function call.

This change ensures that the locks are acquired in the correct order, preventing the possibility of a deadlock.

Weakness: CWE-667

Which versions are affected by CVE-2024-41080?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-41080?

Apply the vendor's patch.

Is CVE-2024-41080 being exploited?

There is no known exploitation of CVE-2024-41080 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-47985, AZL-48051, BELL-CVE-2024-41080, DEBIAN-CVE-2024-41080, GHSA-hxr9-q428-7jhg, UBUNTU-CVE-2024-41080.