CVE ID:	CVE-2022-3176
Description:	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
Test IDs:	1.3.6.1.4.1.25623.1.0.893173   1.3.6.1.4.1.25623.1.0.705257
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2022-3176 Debian Security Information: DSA-5257 (Google Search) https://www.debian.org/security/2022/dsa-5257 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?h=linux-5.4.y&id=fc78b2fc21f10c4c9c4d5d659a685710ffa63659 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?h=linux-5.4.y&id=fc78b2fc21f10c4c9c4d5d659a685710ffa63659 https://kernel.dance/#fc78b2fc21f10c4c9c4d5d659a685710ffa63659 https://kernel.dance/#fc78b2fc21f10c4c9c4d5d659a685710ffa63659 https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html