There exists a use-after-free in io_uring in the Linux kernel. Signalfd_poll() and binder_poll() 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 io_uring poll doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with io_uring poll, and the waitqueue gets freed. We recommend upgrading past commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659
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History
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Information
Published : 2022-09-16 14:15
Updated : 2024-11-21 07:18
NVD link : CVE-2022-3176
Mitre link : CVE-2022-3176
CVE.ORG link : CVE-2022-3176
JSON object : View
Products Affected
linux
- linux_kernel
debian
- debian_linux
CWE
CWE-416
Use After Free