CVE-2022-3176 (GCVE-0-2022-3176)

Vulnerability from cvelistv5 – Published: 2022-09-16 13:55 – Updated: 2025-04-21 13:49
VLAI
Title
Use-after-free in io_uring in Linux Kernel
Summary
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
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Kernel Affected: unspecified , < fc78b2fc21f10c4c9c4d5d659a685710ffa63659 (custom)
Create a notification for this product.
Date Public
2022-08-31 00:00
Credits
Bing-Jhong Billy Jheng <billy@starlabs.sg>
Show details on NVD website
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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