CVE-2022-3176: Use-after-free in io_uring in Linux Kernel
Last updated 25 April 2025
Other sources
There exists a use-after-free in iouring in the Linux kernel. Signalfdpoll() and binderpoll() use a waitqueue whose lifetime is the current task. It will send a POLLFREE notification to all waiters before the queue is freed. Unfortunately, the iouring poll doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with iouring poll, and the waitqueue gets freed. We recommend upgrading past commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659
— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2022-3176?
CVE-2022-3176 is classified as a high-severity vulnerability due to its potential to compromise the stability and security of the Linux kernel.
How do I fix CVE-2022-3176?
To fix CVE-2022-3176, you should upgrade to the patched versions of the Linux kernel which are 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.10-1, or 6.12.11-1.
Which Linux kernel versions are affected by CVE-2022-3176?
CVE-2022-3176 affects various Linux kernel versions from 5.1 up to 5.4.212 and within specific ranges up to 5.17.
What are the potential risks of CVE-2022-3176?
The risks associated with CVE-2022-3176 include application crashes, data corruption, and possible exploitation by attackers to execute arbitrary code.
When was CVE-2022-3176 disclosed?
CVE-2022-3176 was disclosed on November 29, 2022.